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When Piaget unveiled the hand-wound Calibre 9P at the 1957 Basel Fair, a number of established houses quietly insisted it had to be a trick. A movement two millimetres tall, produced in series, reliable enough for daily wear — it could not be done. It had been done. Three years later Piaget went further, with the automatic Calibre 12P at 2.3mm and a 24-carat gold micro-rotor — a record for the thinnest self-winding movement that would stand, astonishingly, until Bulgari finally beat it in 2017.
Here is the argument, plainly: Piaget is the most underrated name in vintage watch collecting, and the market is in the early stages of correcting that mistake. It has every credential the so-called holy trinity is celebrated for — an in-house manufacture, record-setting calibres, decorative mastery no rival matched — and yet comparable vintage Piaget still changes hands for a fraction of what a Patek Philippe, an Audemars Piguet or a Cartier of the same era and metal commands. That gap is not a verdict on the watches. It is a hangover from a category prejudice that the same auction system has, in the past eighteen months, demonstrably abandoned for Cartier. Piaget is next.
The view this argues against is the lazy consensus: that Piaget is a jewellery house that happens to make watches, a “ladies’ brand,” decorative rather than serious. That consensus is wrong, and the evidence is not subtle.
The manufacture credentials are real, and they are old
Begin with the part the prejudice ignores. Georges Édouard Piaget established the workshop in La Côte-aux-Fées in 1874 and built movements before he built watches. Piaget remains one of a small handful of houses that have designed and manufactured their own calibres in-house across their entire history — the single criterion collectors most often cite as the dividing line between a watchmaker and an assembler.
And not merely competent movements: record movements. The 2mm 9P and the 2.3mm 12P were not marketing thinness; they were the genuine engineering frontier of their day, and the 12P’s record endurance — roughly fifty-seven years at the top of the thinnest-automatic table — is a span that ought to embarrass anyone who files Piaget under “fashion.” The lineage is unbroken: the 430P and 900P revivals, the 910P retaking the thinnest-automatic-watch record in 2018, and the Altiplano Ultimate Concept, the thinnest mechanical watch ever made, conceived expressly to honour the 9P’s sixtieth anniversary. As Piaget’s then-CEO Chabi Nouri put it, the point was to “affirm Piaget’s status as the creator of some of the most elegant ultra-thin watches ever made.” That is not a jewellery brand’s sentence. It is a manufacture’s.
A watchmaker that can make the thinnest movement in the world, repeatedly, for sixty years, is a serious watchmaker. The market prices Patek and Vacheron ultra-thins on exactly this logic. It has simply declined, so far, to extend the same logic to the house that arguably did it first and thinnest.
Nobody matched the decorative artistry — and the supply is being destroyed
The second pillar is the one the prejudice misreads as a weakness. Through the 1960s and 1970s — what collectors widely regard as Piaget’s most creative era — the house did something no competitor did at the same level: it married record-thin in-house movements to genuine decorative art. Hard-stone dials in lapis lazuli, malachite, tiger’s eye, onyx and turquoise, cut and fitted by hand so that no two are identical. Cushion and “TV” cases with crisp clous-de-Paris work. Integrated solid-gold bracelets woven to a standard that, as the dealer Eric Wind has noted, would cost a fortune to reproduce today and frequently cannot be reproduced at all.
This is where the value case sharpens into something close to urgency, because the supply is actively shrinking. For decades these gold-bracelet and stone-dial pieces were treated as jewellery rather than horology, which means a great many were melted for their scrap gold — the bracelets in particular “cruelly melted,” in Wind’s phrase. Hard-stone dials cannot be re-sourced to original spec; modern production simply cannot replicate the old lapidary work. Every example destroyed for melt narrows a pool that was never large to begin with. Scarcity that is both genuine and worsening is precisely the attribute the 2026 market has rewarded above all others.
The cultural cachet, incidentally, was never in doubt. Piaget was the jet set’s watch — the chic alternative to a conventional timepiece — worn by the artists and socialites of the period; Andy Warhol’s own Piaget is well enough known that the modern house still references it by name. A brand does not earn that place in the culture by being decorative and nothing more.
The mispricing is measurable — and the Cartier precedent is the tell
Now the numbers, which are the heart of the matter. Comparable 1950s–1970s dress watches from Cartier, Patek Philippe and Audemars Piguet routinely command two to three times more than the equivalent Piaget — same era, same precious metal, often a thinner and more technically accomplished movement on the Piaget side. Stone-dial Piaget has appreciated sharply where collectors have woken up to it — several multiples over the 2010s at the major houses — and yet, against its trinity peers, it remains conspicuously cheap. A buyer can still acquire a solid-gold, in-house, hand-finished Piaget for what a modern steel sports watch costs. That is an anomaly, not an equilibrium.
What makes the anomaly a thesis rather than a curiosity is the Cartier precedent. For years the trade insisted Cartier was a jewellery house first and a watchmaker second, and priced it accordingly — even as serious collectors quietly disagreed. Then the institutional system capitulated. This spring a London-signed Cartier Crash set a world record at auction, the “Shapes of Cartier” sales brought hundreds of vintage Cartier to market across three continents, and the prejudice dissolved in public. The watches did not change. The market’s willingness to price decorative-and-serious as the most powerful combination in collecting is what changed.
Piaget sits in the identical position Cartier occupied five years ago: a maison whose decorative brilliance has been used as an excuse to discount its horology, held back by a gendered, dated category error. The same collectors and the same auction departments that just rerated Cartier are running short of undervalued shaped-and-decorative quarry. Piaget is the obvious next stop, and the early signals — the Polo 79 reissue’s reception, the surge of interest in small stone-dial dress watches, specialists openly calling vintage Piaget “rich in horological history and undervalued” — suggest the repricing has already begun.
The strongest objection, fairly put
The serious counter-argument deserves its due. It runs like this: Piaget’s vintage output is disproportionately decorative, often quartz, frequently in small “ladies'” sizes, with ultra-thin calibres that are fragile and genuinely difficult to service — lose a screw on a 9P and you can be in for several times what you paid. Cheap, on this view, because it should be cheap; and the Polo 79 noise is brand marketing, not collector conviction.
Each point has a grain of truth and none survives contact with the whole picture. Yes, Piaget made quartz in the quartz era — so did Patek, Audemars Piguet and Rolex; nobody discounts a mechanical 3940 because the 1980s existed. The “small and decorative therefore feminine therefore lesser” reasoning is the exact prejudice that suppressed Cartier, and the market has just shown what happens when it breaks — case sizes that read as “small” today were simply the elegant norm of their period, and the dress-watch revival has made them desirable again rather than disqualifying. Servicing difficulty is real, but it is a sourcing-and-condition discipline — buy unpolished, original-dial examples from specialists who can service the calibre — not a statement about value; if anything it reinforces scarcity. And the Polo 79’s reception is not the argument; the manufacture record and the destroyed-supply stone dials are. The reissue merely told the wider market what collectors already knew.
What it means if this is right
Treat this less as a buy signal than as a way of seeing. If the argument holds, the rerating that came for Cartier comes for Piaget — not as a hype spike but as a slow institutional correction of a long mispricing, the kind that rewards patience rather than speed. The collector who internalised this year’s two clearest lessons — that the market now pays for genuine rarity and hand-work, and that rising gold has lifted the floor under everything gold-cased — is already most of the way to the conclusion, because vintage Piaget is almost entirely solid gold, almost entirely hand-finished, and getting scarcer by the melt.
There is also a closing window in the most literal sense. The stone-dial and woven-gold-bracelet pieces “in the old Piaget way,” as one collector put it, cannot be made again; the supply only contracts. The watches that embody the thesis most completely are the ones disappearing fastest. A market that has spent eighteen months learning to price the scarce, the hand-made and the gold will not leave the most underrated name in vintage underrated for much longer.
The naysayers in 1957 were sure the 9P could not exist. It is still keeping time. The consensus on Piaget is wrong in the same direction, for the same reason — a failure to look closely at what is actually there. Look closely.
If you would like to talk through where vintage Piaget sits in a serious collection, the conversation — and the collection — is at therarecorner.com.
For those who understand.
