Quick Takeaways
- The Panerai PAM00309 — the Radiomir Titanium — is a 2008 special edition of 150 pieces, housing the OP XXVII calibre, Panerai’s personalisation of the Minerva 16-17 base movement from Villeret — one of the most historically significant small manufactures in Swiss watchmaking.
- The defining visual detail is a knurled pink gold ring on the outer chapter of the dial, paired with pink gold hands, creating a deliberate warm accent within an otherwise cold, functional brushed titanium case — a contrast unique to this reference and its two siblings.
- The Minerva 16-17 base beats at 18,000 vph with a swan’s neck regulator and 18 jewels — a movement architecture rooted in the classical fine watchmaking tradition of Villeret, visible through the exhibition sapphire caseback with a quality of finish rarely seen in a titanium Panerai.
- The black sandwich dial carries no brand name — no “Officine Panerai” inscription anywhere on the dial face — honouring the anonymous military instrument heritage that defined the original wartime Radiomir and still distinguishes the most historically faithful modern references.
- Secondary market pricing for documented examples runs approximately $18,000–$28,000 USD, with a thin but engaged buyer base that specifically values the Minerva calibre and the rarity of the pink gold rehaut configuration.
Jump directly to the spec sheet.
There is a moment around 2007 and 2008 when something quietly extraordinary happened inside Panerai’s special editions catalogue. The brand had spent the previous three years establishing its in-house manufacture in Neuchâtel — the P.2002 in 2005, the P.2003 in 2007 — and the narrative being written was about Panerai’s future as a maker of its own calibres. What is less frequently discussed is what happened in parallel: Richemont, Panerai’s parent group, acquired the Fabrique d’Horlogerie Minerva SA in October 2006. And for a brief window, movements from Villeret — one of the most storied small manufactures in the Bernese Jura — found their way into titanium Radiomir cases.
The PAM00309 is that window, expressed in 150 pieces.
Released in 2008 as the black-dial member of a small titanium Radiomir family, it carries the OP XXVII calibre — Panerai’s personalisation of the Minerva 16-17 base. Hand-wound. Eighteen thousand vph. Swan’s neck regulator. A caseback that opens onto a movement finished to a standard most Paneristi have never seen inside their watches.
The case is brushed 47mm titanium. The dial is a black sandwich with no brand name anywhere on its face. And running around the outer chapter, where most Panerai dials carry nothing but a minute track, sits a knurled pink gold ring — warm, textured, completely at odds with the cold industrial character of the case, and entirely deliberate.
This is what the PAM00309 is: two manufacturing traditions, bound together by a ring of pink gold, in 150 pieces.
Villeret Inside a Titanium Radiomir — The Richemont Connection
What Happened When Richemont Acquired Minerva in 2006
To understand why a titanium Radiomir carries a Villeret movement, you need to understand Minerva’s position in Swiss watchmaking at the moment Richemont bought it.
Minerva SA was founded in 1858 in the small Bernese Jura village of Villeret. Over more than a century and a half of continuous movement production — including surviving the 1970s quartz crisis, a remarkable achievement — Minerva built a reputation specifically for hand-finished, classically constructed calibres. Their chronograph movements, in particular the Calibre 13-20, became reference points for the craft. The Villeret workshops never relocated. The same building has produced mechanical movements for over 165 years.
When Richemont acquired Minerva in October 2006, the group had two things at once: a Panerai manufacture in Neuchâtel producing in-house automatic and hand-wound calibres, and a Villeret facility producing some of the most beautifully finished hand-wound movements in the world. The solution was pragmatic and, for collectors, historically significant. Minerva’s time-only calibres were personalised for select Panerai special editions. The result was the OP XXVII — Minerva 16-17 base, retrimmed and signed for Panerai — appearing in a small family of titanium Radiomirs between 2008 and 2009.
This arrangement did not last. Montblanc, also part of Richemont, eventually assumed custodianship of Minerva’s movement heritage, and the Villeret calibres became the foundation of the Montblanc 1858 collection. The Panerai titanium Minerva editions occupy a specific, closed chapter in both brands’ histories. The PAM00309 cannot be repeated.
The PAM309, PAM322, PAM349 — A Small and Specific Family
The PAM00309 belongs to a group of three titanium Radiomirs, all sharing the OP XXVII movement and the pink gold ring/hand configuration:
The PAM00309 carries a black dial with Arabic numerals only — the most tonally restrained of the three. Cold titanium case, black dial field, pink gold rehaut ring and hands as the sole warm accent.
The PAM00322 carries a brown dial with Arabic numerals — warmer in register, the “tobacco” sibling that echoes the brown dial philosophy seen in the PAM00274 and PAM00262. The Blowers Jewellers description of the PAM00322 captures the family character precisely:
“Minerva is one of the best manufacturers few people have heard of, the beautiful movement can be seen through the large sapphire case back, revealing the beautifully finished movement and worth investing a little time to learn about this fabulous manufacturer and why their movements are revered, based in Villeret where very few movements annually are produced.” — Blowers Jewellers, UK, on the Panerai Radiomir Titanium PAM00322
The PAM00349 carries a black California dial (Arabic and Roman numerals, as on the PAM00249) and was produced in only 12 pieces as a boutique edition — making it the rarest and most prized member of the family.
Within this trio, the PAM00309 is the entry point — 150 pieces, black dial, maximum tonal contrast between case and rehaut. It is the reference most frequently encountered in secondary markets, though “frequently” is a relative term for 150 pieces worldwide.
The OP XXVII — Movement from Villeret
16¾ Lignes, Swan’s Neck, 18,000 vph — What This Means
The OP XXVII designation is Panerai’s house marking for a calibre built on the Minerva 16-17 base — a time-only movement measuring 16¾ lignes in diameter (approximately 37.8mm), fitting the large 47mm Radiomir case with appropriate visual presence through the caseback.
The specifications matter and deserve proper treatment. 18,000 vph — 2.5 Hz — is significantly slower than most contemporary movements, including Panerai’s own P.2000 series (28,800 vph). In a movement of this type and finish quality, that is not a compromise. Lower frequency movements are technically easier to finish to a high standard, generate less wear on the escapement components over time, and are generally associated with classical haute horlogerie rather than modern high-frequency timekeeping. The Minerva tradition in Villeret was always low-frequency precision, not high-frequency accuracy.
The swan’s neck regulator is a specific finishing feature that distinguishes classical movement quality from production watchmaking. A swan’s neck spring presses against the regulator index with consistent, spring-loaded pressure, reducing the possibility of accidental rate change when the movement is moved or handled. On an OP XXVII viewed through the caseback, the swan’s neck is immediately identifiable — a fine, curved blade of blued steel pressing against the regulator. It is not a functional necessity at this scale; it is a sign of how the movement was finished.
18 jewels, Glucydur balance (beryllium copper alloy, non-magnetic, thermally stable), KIF Parechoc anti-shock device. 55-hour power reserve — slightly less than the 56 hours of the OP X in the PAM00249 and PAM00262, but generous for a two-and-a-half-day reserve at a conservative beat rate.
The movement has fausses côtes decoration on the bridges — Côtes de Genève — rhodium-plated to a standard appropriate for the Villeret provenance. The bridge architecture follows the Minerva tradition: clean, well-spaced, readable as architecture rather than merely mechanism.
The Panerai Equation of Time represents the upper end of what the brand’s fine watchmaking ambitions eventually produced; the PAM00309’s OP XXVII sits at a different point on that same ambition — a time-only movement of exceptional classical quality, from a manufacturer whose reputation was built on exactly this kind of calibre.
Through the Caseback
The exhibition sapphire caseback of the PAM00309 is not decorative. On most Panerai special editions with exhibition casebacks — the P.2002, P.2003 family — the view reveals a movement that is genuinely worth seeing: architectural, purposeful, with a finish that justifies the transparency.
The OP XXVII through the caseback of the PAM00309 shows a movement that reads differently from those in-house Panerai calibres. The Minerva heritage is visible in the bridge design, the decorative finish, and the specific quality of the swan’s neck — elements that were shaped by over a century of movement-making in Villeret rather than the functional clarity of Panerai’s Neuchâtel manufacture. These are complementary approaches to making a mechanical movement well. They are not the same approach, and the difference is legible through the glass.
The Submersible collection’s use of titanium demonstrates how the material has moved through Panerai’s catalogue — initially a technical choice for demanding dive applications, later adopted into special editions precisely because its lightness and strength create a wrist presence distinct from steel. The PAM00309 uses brushed titanium — matte, utilitarian, anti-reflective — as a deliberate counterpoint to what sits inside. The movement is refined; the case is not trying to be.
The Dial — Pink Gold Ring on Titanium
Black Sandwich, No Brand Name, Arabic Only
The PAM00309’s dial is a black sandwich construction — two-layer, with luminous material between the layers glowing through cut-outs for the numerals and indices. Standard Panerai luminous architecture. The hands are small, Arabic numerals mark the hours, and a small seconds sub-dial sits at 9 o’clock in the Radiomir tradition.
What is not standard is the knurled pink gold ring on the outer chapter. This rehaut — a raised, textured ring inside the crystal, just inside the minute track — is machined in pink gold with a coin-edge knurl pattern. On the dial of the PAM00309, it reads as a warm internal frame: black dial field, pink gold outer ring, black bezel. The warm/cold contrast operates at dial level rather than between dial and case, and the effect is more subtle and more interesting than a straight warm dial on a cool case would be.
The pink gold hands reinforce the rehaut. At scale, against a black field, pink gold hands read as distinctly warm — warmer than silver, warmer than white gold, with a colour temperature that references the Minerva movement’s rhodium-plated bridges through the caseback rather than fighting them.
No “Officine Panerai” anywhere on the dial face. The military anonymity tradition of the original Radiomir — instruments built for Italian frogmen bearing no maker’s mark — runs through the PAM00309 as directly as it runs through the PAM00249 California. The absence of branding on the dial is not minimalism for its own sake; it is a statement about where this watch comes from. In that sense, the Panerai LAB-ID PAM00700 and the PAM00309 share almost nothing technically, but occupy the same collector space — watches where the interesting story is inside the case, and the dial knows enough to stay out of the way.
150 Pieces, Titanium, and the Secondary Market
One hundred and fifty pieces is an unusual production ceiling for Panerai. It sits above the ultra-rare 50-piece tier (PAM274, PAM322 sibling) but well below the 250-piece and 300-piece levels that characterise most significant special editions. It is enough for the watch to surface with some regularity in secondary markets — perhaps two to four examples visible at any time globally — but not enough for buyers to be patient indefinitely.
For the PAM00309 specifically, the secondary market is defined by collectors who understand the Minerva backstory. Those who encounter it as simply a titanium Radiomir with an unusual dial detail tend to price it comparably to other 47mm titanium Panerai specials. Those who know what the OP XXVII represents — a calibre from Villeret, made in the same workshops for over a century, with a swan’s neck regulator and Côtes de Genève decoration — price it differently.
The European Watch Co listing documents the full-set configuration: Panerai box, papers, and a 2025 factory service receipt — confirming that the movement is being serviced at official Panerai facilities without difficulty, which is relevant for any buyer considering long-term ownership. The sibling PAM00322 has traded at approximately $29,995 USD in documented full-set condition on Chrono24. The PAM00309’s black dial and slightly different collector positioning typically places it at $18,000–$28,000 USD for complete examples, depending on condition and documentation completeness.
The trapezoidal brushed titanium tang buckle — 22mm — is a distinctive hardware detail confirmed on both the PAM00309 and its siblings. It matches the case finish rather than making a contrast statement, and it is the correct buckle for a complete, documented example. Replacement strap with wrong buckle materials is a common documentation issue on titanium Panerai specials.
Who Is It For?
- The collector drawn to the Minerva movement story — the PAM00309 is one of the most accessible entry points into the Panerai/Villeret chapter. The black dial and titanium case position it below the price premium that the PAM00322’s warm brown dial commands, while housing the identical movement.
- A Paneristi who wants 47mm wire lugs with genuine fine watchmaking inside — the OP XXVII in titanium is an unusual configuration that exists nowhere else in the Panerai catalogue. The combination of the most utilitarian Panerai case material with a movement from the most classically decorated Swiss tradition creates something genuinely unrepeatable.
- A collector building across the Radiomir Titanium Minerva family — owning the PAM00309 alongside the PAM00322 (brown dial) is one of the more coherent pair-collecting propositions in the post-2006 Panerai catalogue: same movement, same case, same knurled ring, different dial register entirely.
- Someone specifically interested in the Richemont manufacture crossover era — the PAM00309, the Montblanc Villeret collection, and the Angelus-movement Panerai references of the early 2000s all occupy the same historical bracket. Collectors of this specific period value the PAM00309 as a document of what happened when Richemont’s manufacture relationships briefly overlapped.
Not for: Collectors whose primary criterion is Panerai’s own in-house movement identity — the OP XXVII is a Minerva-based calibre, not a Neuchâtel manufacture product, and that distinction matters if manufacture purity is the collecting brief. Not for buyers who need active, liquid market support — 150 pieces means occasional availability and patience at both acquisition and exit. Not for those who want contemporary watchmaking specifications — 18,000 vph and a 55-hour reserve are classical choices that prioritise finish quality over modern frequency. And not for collectors who find titanium at precious-metal price levels philosophically hard to justify — the PAM00309’s price reflects the movement, not the case material.
Conclusion
The PAM00309 does not announce itself. The case is brushed titanium — functional, matte, military in character. The dial is black and anonymous, no brand name, Arabic numerals and a small seconds hand. Nothing about the exterior position signals what sits behind the caseback.
Open that caseback and you find a movement from Villeret. Swan’s neck regulator, Côtes de Genève bridges, 18,000 vph, a century and a half of manufacturing tradition in a small village in the Bernese Jura. And inside the crystal, running around the chapter ring, a knurled ring of pink gold that has no military justification whatsoever and is entirely correct.
One hundred and fifty pieces. The Richemont years. The brief moment when Panerai and Minerva occupied the same case.
Does the provenance of a movement — who made it, where, and under what tradition — affect how you relate to a watch? Tell us below.
Extended Summary
- PAM00309 is the Radiomir Titanium — 150 pieces from 2008, part of a three-watch titanium family (PAM309 black dial, PAM322 brown dial, PAM349 California dial boutique edition) all sharing the OP XXVII hand-wound calibre — Panerai’s personalisation of the Minerva 16-17 base from Villeret, made possible by Richemont’s 2006 acquisition of the Fabrique d’Horlogerie Minerva SA.
- The OP XXVII is a classically constructed hand-wound movement measuring 16¾ lignes, beating at 18,000 vph with a swan’s neck regulator, 18 jewels, Glucydur balance, and Côtes de Genève bridge decoration — a quality of finish associated with the Villeret manufacture’s century-long tradition of haute horlogerie calibre production.
- The knurled pink gold ring on the outer chapter — paired with pink gold hands — is the PAM00309’s defining visual signature: a warm accent in cold brushed titanium, creating a within-dial contrast that differs from any other reference in the Radiomir line.
- The black sandwich dial carries no brand name, honouring the anonymous military instrument heritage of the original wartime Radiomir prototypes, and the brushed titanium case with trapezoidal tang buckle maintains the utilitarian tool-watch character that makes the classical Minerva movement inside an unexpected and deliberate collision.
- Secondary market pricing of approximately $18,000–$28,000 USD for documented full-set examples reflects the specific collector appreciation for the Minerva/Villeret provenance, the 150-piece production ceiling, and the configuration’s non-repeatability — the Panerai/Villeret chapter closed when Montblanc assumed custodianship of Minerva’s heritage.
At a Glance
| Spec | Detail |
|---|---|
| Reference | PAM00309 |
| Collection | Special Editions |
| Released | 2008 |
| Limited to | 150 pieces |
| Case material | Brushed titanium, 47mm |
| Case thickness | 14.3mm |
| Lugs | Removable wire lugs (patented) |
| Water resistance | 100 metres |
| Crystal | Sapphire |
| Caseback | Exhibition sapphire |
| Movement | Panerai OP XXVII (base Minerva 16-17, hand-wound) |
| Power reserve | 55 hours |
| Beat rate | 18,000 vph |
| Jewels | 18 |
| Size | 16¾ lignes |
| Complications | Hours, minutes, small seconds at 9 |
| Dial | Black sandwich; Arabic numerals; pink gold knurled outer ring; no brand name |
| Hands | Pink gold; luminous |
| Strap | Black alligator, 27/22mm |
| Buckle | Trapezoidal brushed titanium tang, 22mm |
| Availability | Discontinued; 150 pieces only |
