The Audemars Piguet Millenary is the oval-cased line the manufacture made from 1995 until the early 2020s, and its discontinuation has made it the least expensive way into an Audemars Piguet with an in-house movement: a steel Millenary 4101 (15350ST) asks less than half of a steel Royal Oak Selfwinding, and the women's hand-wound 77247 in gold sits close to a steel Royal Oak 34 mm. The line ran from the time-only 4101 with its exposed balance wheel through the Pianoforte, the Quadriennium calendar, the openworked and minute repeater versions, the women's 77247 and 77244 with the calibre 5201 and the diamond-set Millenary tourbillons. This guide sets out the references, explains what makes the 4101 movement unusual, gives dated 2026 catalogue asks, and lists what to check before buying a watch the brand no longer makes. Bizak & Co. sources every reference below to order; the Millenary collection lists the configurations we can seek.
Last reviewed on September 21, 2026 by Filip Biczak. Prices are dated observations, not quotes.
Which Audemars Piguet Millenary references exist?
| Reference | Model | Case | Movement |
|---|---|---|---|
| 15350ST, 15350OR | Millenary 4101, from 2011 | 47 mm by 42 mm oval, steel or rose gold | Calibre 4101, automatic, balance visible on the dial side |
| 15352OR | Millenary Openworked | 47 mm oval, rose gold | Hand-wound, openworked |
| 15325BC | Millenary Pianoforte | 40 mm oval, white gold | Automatic, black lacquer dial with piano-key motif |
| 15336BC | Millenary QE II Cup 2013 | 45 mm oval, white gold, diamond-set | Automatic; limited edition for the Hong Kong horse race |
| 26149OR | Millenary Quadriennium | 47 mm oval, rose gold, enamel dial | Calendar complication with leap-year cycle |
| 26371OR | Millenary Minute Repeater | 47 mm oval, rose gold, enamel dial | Hand-wound minute repeater with the AP escapement |
| 77247, 77244, 77248 | Millenary women's, from 2015 | 39.5 mm by 35.4 mm oval, rose or white gold, frosted gold, diamonds | Calibre 5201, hand-wound, balance visible on the dial side |
| 26354, 26381 | Millenary Tourbillon women's | 45 mm oval, diamond-set gold | Hand-wound tourbillon |
Source: the Audemars Piguet watch collection no longer lists the Millenary, which confirms its discontinued status; the Audemars Piguet services page covers servicing of discontinued calibres and the extract from the archives. Dates and calibre details for the rarer references are from general watch references and should be confirmed for the specific watch.
What is the Audemars Piguet Millenary?
Audemars Piguet launched the Millenary in 1995, named for the approaching millennium, as an oval-cased watch that deliberately departed from the Royal Oak's octagon. Early Millenaries were conventional oval watches with centred dials. The line became distinctive in 2011 with the Millenary 4101, whose calibre 4101 was designed to be viewed from the front: the time display is pushed off-centre to one side and the balance wheel, bridges and escapement are exposed on the other, so the dial is really the movement. The women's models of 2015 followed the same idea with the hand-wound calibre 5201, and the complicated versions (Quadriennium, minute repeater, tourbillon) used the oval case for dial layouts the Royal Oak cannot accommodate. The Millenary never sold in Royal Oak numbers, which is why the manufacture wound it down when it rationalised the collection around the Royal Oak, Offshore and Code 11.59.
Millenary 4101: the reference most buyers want
The 15350 is the Millenary to know. The 47 mm by 42 mm oval case wears smaller than the numbers suggest because the height, not the width, is 42 mm, and the case is about 13 mm thick with a domed sapphire crystal. The calibre 4101 is an automatic with about 60 hours of reserve, an off-centre hour and minute dial with a small seconds below it, and the balance at the opposite side, with anthracite-finished bridges in the steel version and rose-gold-toned bridges in the gold version. It came on a leather strap with a folding clasp. Steel 15350ST examples are the least expensive Audemars Piguet with an in-house automatic calibre on the secondary market, and the rose gold 15350OR sits below any gold Royal Oak by a wide margin.
Millenary women's models: 77247, 77244 and 77248
The 2015 women's Millenary is a smaller oval, 39.5 mm by 35.4 mm, in rose or white gold with a diamond-set bezel on most references and an off-centre mother-of-pearl or opal dial on the right. The hand-wound calibre 5201 shows its balance on the left, so the watch shares the 4101's dial-side mechanics at a scale that suits a smaller wrist. The 77244 in Frosted Gold with an opal dial is the most decorative version; the 77248 adds further diamonds. All were sold on leather or satin straps, with some references on a gold bracelet. They are the alternative to a Royal Oak 34 mm for a woman who wants a manufacture movement she can see and a case that is not an octagon.
Complicated Millenaries: Openworked, Quadriennium, Minute Repeater and Tourbillon
- Millenary Openworked 15352OR. A hand-wound movement skeletonised across the whole oval, in rose gold; rarer than the 4101 and priced above it.
- Millenary Quadriennium 26149OR. A calendar model with a white enamel dial in rose gold; the enamel work is the reason for its price.
- Millenary Minute Repeater 26371OR. The most expensive Millenary, with a striking mechanism and the Audemars Piguet escapement; sold in very small numbers.
- Millenary Tourbillon 26354 and 26381. Women's tourbillons in a 45 mm oval with diamond-paved cases and dials, in rose or white gold; valued on stones and movement rather than model demand.
How does the Millenary wear?
The 47 mm width reads alarming on paper, but the oval sits along the wrist rather than across it and the lugs are short, so a 15350 fits a wrist from about 17 cm. The case is thick, and the domed crystal adds to it, so it does not slip under a tight cuff. The women's 39.5 mm oval fits a wrist from about 15 cm and wears like a 34 mm round watch. Both sizes come on straps, which makes them lighter than any bracelet Royal Oak. The Millenary is a watch to wear with the dial visible; the whole point is the movement in view.
How much is an Audemars Piguet Millenary? Prices in 2026
- Retail. The Millenary is discontinued and Audemars Piguet no longer publishes a price for it. Its last retail prices sat below the Royal Oak in the same metal, and the secondary market keeps that gap.
- Bizak catalogue asks, 21 September 2026. Our sourced catalogue listed the Millenary 4101 15350ST in steel at US$20,172 and the 15350OR in rose gold at US$32,099, the Millenary Openworked 15352OR at US$67,299, the Pianoforte 15325BC at US$34,409, the QE II Cup 15336BC at US$65,499, the Quadriennium 26149OR at US$92,599, the Minute Repeater 26371OR at US$419,799, women's 77247 references from US$26,676 to US$46,785 depending on metal and strap or bracelet, the 77248BC at US$52,941, the Frosted Gold opal 77244OR at US$51,565 and Millenary Tourbillon references from US$294,199 to US$589,200, all sourced to order.
- What moves the price. Full set with warranty card and box, an unpolished case, a gold bracelet rather than a strap on the women's models and a recent manufacture service each add; a replaced strap and missing papers subtract less than on a Royal Oak because buyers are fewer and more forgiving.
Those figures describe what we saw and will move. Ask for a dated quote for the exact reference and set; our Audemars Piguet price guide explains how to compare quotes.
Is the Millenary a good investment?
It has not been. The Millenary's prices fell after discontinuation rather than rising, because the buyers who wanted one had bought one and the model never had the waiting-list demand that lifts the Royal Oak. That is precisely why it is a value buy: the steel 4101 is a manufacture Audemars Piguet with a movement designed to be looked at, at a price closer to a steel Rolex than to a Royal Oak. Buy it because you like the oval and the exposed balance; if resale matters, ask for a written cash-buy assessment before you commit and expect a wider spread than on a Royal Oak.
Buying a Millenary: what to check
- Reference and papers. The reference on the caseback should match the warranty card; for a watch without papers, budget for an extract from the archives.
- Balance and bridges. On the 4101 and 5201, the exposed balance should oscillate evenly and the bevelled bridge edges should be unmarked; scratches here show a careless service.
- Crystal. The domed sapphire on the 4101 is expensive to replace; check its edge for chips.
- Case. The oval case is polished and brushed in bands; soft transitions mean it has been refinished.
- Diamonds. On women's references, confirm the stones are factory set (the reference carries ZZ) and that none are missing or replaced.
- Service history. Ask for the last manufacture service receipt; a Millenary with none in the last six or seven years should be priced as one that needs a service.
- Price against the band. A full-set 4101 offered well under the market is the single most reliable warning sign, even on a model with soft demand.
Our authentication process describes what we inspect before dispatch, and our Royal Oak authentication and collecting guide covers the paperwork and archive extract process that applies to every Audemars Piguet.
Quick answers
Is the Audemars Piguet Millenary discontinued?
Yes. Audemars Piguet wound the Millenary down in the early 2020s and it no longer appears in the current collection, so every reference trades on the secondary market.
How much is an Audemars Piguet Millenary?
Bizak's sourced catalogue listed the steel Millenary 4101 15350ST at US$20,172, the rose gold 15350OR at US$32,099 and women's 77247 references from US$26,676 on 21 September 2026, sourced to order. Complicated versions run far higher.
What is the Millenary 4101?
The 47 mm oval Millenary launched in 2011 with the calibre 4101, an automatic movement built to be seen from the front, with an off-centre time dial on one side and the balance wheel exposed on the other. It came in steel and rose gold.
What size is the Millenary?
The men's 4101 and complicated models are 47 mm wide by 42 mm high; the Pianoforte is 40 mm; the women's 77247 and 77244 are 39.5 mm by 35.4 mm; the women's tourbillons are 45 mm.
Is the Millenary a good first Audemars Piguet?
For a buyer who wants an in-house movement at the lowest price, yes; the steel 4101 asks less than half of a steel Royal Oak. For a buyer who cares about resale, the Royal Oak is the safer choice.
Request a Millenary sourcing quote
Tell us the reference, metal, preferred condition and whether the full set is required, plus your budget and timing, through our sourcing enquiry form. We confirm the specific watch, photographs, papers and final price before you commit. Catalogue entries: Millenary 4101 15350ST steel, Millenary 4101 15350OR rose gold, Millenary Openworked 15352OR, Millenary 77247OR women's, Millenary Frosted Gold 77244OR; browse the Millenary collection, the Audemars Piguet collection, the watches from US$20,000 to US$50,000 collection, or sell or trade your Millenary.
Related reading: Audemars Piguet price guide · Royal Oak authentication and collecting guide · Best first Rolex · How to sell a watch.
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