About 39mm Watches
The 39mm case diameter occupies a sweet spot in fine watchmaking, large enough to showcase intricate dials and complications yet refined enough to wear comfortably under a shirt cuff, which is why prestigious maisons like Audemars Piguet have long deployed it across their most important collections. The Royal Oak, designed by Gerald Genta and introduced in 1972, brought the octagonal bezel and integrated bracelet to the world and in its 39mm selfwinding references it delivers that signature architecture in stainless steel and precious metals alike. The Jules Audemars line takes a more classical approach, offering round white gold cases and, in certain references, diamond-set bezels that underscore the brand's haute horlogerie heritage. Across both families the 39mm format supports the automatic movements and finishing levels that define Audemars Piguet's standing among the world's premier watch brands.
What to Look For
When evaluating 39mm Audemars Piguet watches, pay close attention to case material and dial pairing, since a stainless steel Royal Oak with a blue dial such as reference 15300ST.OO.1220ST.02 carries different collector dynamics than a rose gold example on leather like 15300OR.OO.D088CR.02 or the chronograph reference 25960OR.OO.1185OR.01 with its white dial. Condition, box-and-papers status, and whether a piece is pre-owned or brand new all meaningfully affect market value, so Bizak and Co. clearly notes these distinctions for every listing. Diamond embellishment, as seen on the Jules Audemars 15171BC.ZZ.A002CR.01, commands a premium over non-set references of similar metal and movement specification.
Frequently Asked Questions
Why is 39mm considered such a popular case size for luxury watches?
At 39mm a watch offers enough dial real estate to showcase fine detailing, complications, and striking designs while remaining comfortable on a broad range of wrist sizes, which is why houses like Audemars Piguet repeatedly return to this diameter across multiple collections. It also sits precisely between sport and dress categories, making these pieces genuinely versatile for both formal and casual occasions.
What is the difference between the Royal Oak and Jules Audemars references in this 39mm collection?
The Royal Oak is defined by its octagonal bezel, integrated bracelet or strap, and the signature Grande Tapisserie dial pattern, making it one of the most recognizable luxury sport watches in the world, available here in steel and rose gold. The Jules Audemars references such as 15170BC and 15171BC take a round-case, more classically elegant form in white gold, with the diamond-set 15171BC offering added brilliance for dress wear.
Are the 39mm Audemars Piguet watches at Bizak and Co. authenticated?
Yes, every watch offered by Bizak and Co. is fully authenticated prior to sale, and listings clearly indicate whether a piece is brand new or pre-owned so buyers can shop with confidence. The team is available to provide detailed condition reports, reference-specific information, and shipping details for any watch in this collection.
Browse also: Audemars Piguet collection.
Buy, trade, or sell. Contact Bizak & Co. for pricing and availability on any reference in this collection.
