ZF Edition — Integrated 18k Yellow Gold Plated Bracelet
The ZF edition of the Audemars Piguet Royal Oak 15202BA represents a significant technical milestone in the replication of ultra-thin horology. Recognized among collectors for achieving the elusive 8.8mm case profile, this specific reference successfully mirrors the architectural proportions of the genuine Jumbo. The application of heavy 18k yellow gold plating over a 316L stainless steel core provides a visually accurate hue, addressing previous market iterations that struggled with overly brassy or pale gold tones.
At the core of this reference is the custom Calibre 2121 clone movement, engineered specifically to support the classic two-hand configuration of the 15202 series. Unlike standard modified movements that merely cap the seconds pinion, this caliber is built to replicate the structural layout of the genuine ultra-thin mechanism, complete with a skeletonized AP rotor visible through the sapphire caseback. Following strict operational parameters, the power reserve yields approximately 36 hours on a full wind.
Measuring a precise 39mm in diameter with a lug-to-lug distance that accommodates a variety of wrist sizes, the case exhibits the correct brushed/polished alternating finishing that defines the Royal Oak lineage. The gold Petite Tapisserie dial is executed with accurate guilloché depth, capturing ambient light in a manner consistent with genuine AP manufacturing techniques. The integrated bracelet fit ensures seamless articulation, allowing the heavy gold-plated links to drape comfortably while maintaining rigid structural tolerances at the lug junctions.
- Movement: Custom Calibre 2121 Clone — Approximately 36 hours
- Case Material: 316L Steel with 18k Yellow Gold Plating, 39mm diameter, 125.5g weight
- Bezel: 18k Yellow Gold Plated 316L Steel, accurate octagonal geometry
- Crystal: Scratch-Resistant Sapphire with colorless AR coating
- Bracelet: Integrated 18k Yellow Gold Plated Steel, AP folding clasp
- Water Resistance: 50m stated rating — have the case pressure-tested by a professional prior to swimming. Do not operate the crown while the watch is submerged.
This piece is engineered for the collector who appreciates the historical significance of the original 1972 Jumbo design. Its ultra-thin profile makes it an exceptional dress watch that slips effortlessly under a tailored cuff.

Reviews
There are no reviews yet.