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Audemars Piguet Quantieme Perpetual Calendar Moonphase 25548BA - 18K Yellow Gold

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High Complication, Human Scale

Before the Royal Oak, Audemars Piguet built its reputation on classical watchmaking of the highest order. The Quantieme Perpetual is a direct link to that heritage. It houses one of the most respected and difficult complications in horology within a restrained, elegant yellow gold case. This is a pure expression of AP’s technical mastery, offering a level of craft and complexity that directly rivals its peers from Patek Philippe, often for a fraction of the cost.

Classic Proportions, Total Functionality

This reference 25548BA is defined by its balance. The 35.5mm case is a perfect size for a complicated dress watch, providing presence without being oversized. The white dial, with its applied baton markers, is clean and highly legible, allowing the perpetual calendar and moonphase displays to be read at a glance. It's a thoughtful design that prioritizes function over ornamentation.

Clean Dial And An Original Buckle

The watch is in good condition. The 18K yellow gold case is unpolished and shows honest wear consistent with its age. The white dial and the crystal are both in great shape, with the intricate printing remaining crisp and clear. The watch is fitted to a new leather strap that secures with the original 18K gold Audemars Piguet buckle, an important detail that preserves the watch's integrity. As with every watch we offer, this piece has been verified as mechanically sound and is ready to wear.

The Thinking Collector's Perpetual

This is a watch for someone who understands watchmaking beyond the hype. It delivers a Holy Trinity perpetual calendar in a timeless package, representing one of the smartest buys in high horology. It wears beautifully, slides under a cuff with ease, and carries the weight of a true manufacture. It's a confident choice for the collector who values substance over spectacle.

Key Specs

Reference: 25548BA

Model: Quantieme Perpetual Calendar Moonphase

Movement: Automatic

Case Size: 35.5mm

Bezel: 18K Yellow Gold

Bracelet: Leather with Original Buckle

Dial: White

Metal: 18K Yellow Gold

SKU: 666

History

Before the Royal Oak redefined the brand for a new generation, Audemars Piguet spent over a century establishing itself as one of the finest dress watch manufacturers in the world. Founded in 1875 in Le Brassus, the manufacture built its reputation on the strength of its movement finishing and its willingness to produce cases and bracelets of exceptional complexity. The dress watches produced from the 1950s through the 1980s represent the purest expression of this heritage — elegant shapes in precious metal, powered by slim hand-wound or automatic calibres, designed for clients who understood the difference between a luxury watch and a mass-produced one.

The range of case designs that Audemars Piguet explored during this period is remarkable. Ellipses, cushion cases, tonneau shapes, and slim round cases were all produced in yellow gold, white gold, and platinum, often with integrated bracelets that required the same level of engineering as the movements inside them. Stone dials, diamond-set bezels, and textured gold finishes were standard options rather than exceptions. The brand operated as both a watch manufacturer and a jeweler simultaneously, producing pieces that blurred the line between the two disciplines in a way that very few competitors could replicate.

Among collectors, the vintage Audemars Piguet dress watches occupy a position of growing significance. The market's focus on the Royal Oak has meant that the broader catalog remains comparatively undervalued relative to the quality of the manufacturing. Examples in precious metal with unusual dial configurations or integrated bracelets offer a level of craft and design conviction that is difficult to find at equivalent price points from any other manufacturer of comparable stature.

What Our Clients Say About Us

Dan Young
4 months ago

I knew I was gonna like Danny, based on his name, but nothing could’ve prepared me for how great of an experience this was. He had the most beautiful 70s Seamaster Cosmic on his website and I was set to be married 2 days later - I arranged to buy it but before leaving we both realized it needed to be serviced. I panicked, because I was literally buying this for my wedding, and Danny being the legend he is, loaned me a nearly identical Seamaster to make sure I could get through the event Never have I had someone go so above and beyond for me, especially while purchasing one of the lesser priced items in their inventory. He serviced my watch and exchanged it with me after the wedding on a super fast turnaround timeline. I would sincerely recommend you visit this guy, you will not be disappointed Edit: adding a pic of the loaner (two tone) and the owner (crosshair)

Patrick Farella
5 months ago

Great service and shop. Danny and his team were incredibly accommodating, professional, and kind. Great selection of vintage watches. Their store is the hidden gem in the diamond district.

Zee06
2 months ago

This was my first real luxury watch purchase, a Rolex 15200 Date 34mm, I own Tissots and a Laco, but those are entry level luxury watches. I found Danny’s Vintage Watches online, and had great feedback both on Google, Chrono24 and the Reddit watch community. So decided to give him a shot as buying online can be a crap shoot. Ordered Monday night, was at my doorstep Friday morning. Despite the watch being over 30 years old, serial number says it’s from 91, the watch looked new. Didn’t come with box or papers, and was shipped in a plastic sleeve wrapped in bubble wrap. Danny was always available to answer questions. I’ll be buying from Danny again for the next purchase…saw a couple of Speedmasters on his site I liked….

Mohammed Islam
4 months ago

Can't recommend Danny's vintage watches enough!!! My first Omega ever and im in love have been wearing every day since I purchased it. Danny's shop is a must visit if you are in NYC looking for a watch!!!