Black Dial Audemars Piguet Royal Oak Dual Time 25730BA

When Audemars Piguet finally gave the Royal Oak a travel complication in 1992, it arrived fashionably late. The complication debuted years earlier in the round, dressier ref. 25685, powered by the calibre 2229/2845, built on a Jaeger-LeCoultre 928 ébauche. Married to Jacqueline Dimier's 36mm mid-size case, it became the ref. 25730. The Royal Oak's first travel watch, it is easily overlooked as it launched amid a wave of early-90s Royal Oak complications: the Day-Date, Perpetual Calendar, and Chronograph all began around this point. Production ran from 1992 into the early 2000s, when the 39mm 26120 succeeded it. Just a handful are in this configuration with a marvelous black dial.

The overwhelming majority of that run was stainless steel, the 25730ST, followed by two-tone 25730SA. The exotic fringe held a tantalum 25730TT, a platinum 25730PT, and the diamond-set 25757. Full yellow gold, the 25730BA, sat quietly among the rarest standard metals. AP never published per-metal figures, but a decade of hunting tells it plainly: for every 10-15 steel examples that surface, a BA appears perhaps once.

Within that already thin BA production, dials divide the spoils further. Most examples wear champagne, the natural companion to a gold case, with white and cream trailing behind. Black is the outlier, the rarest configuration regularly documented, its tapisserie contrasting to applied gold batons and a gilt handstack with a contrast no other variant musters. Earlier examples carry the petite tapisserie, harder to manufacture and phased out mid-decade for grande tapisserie, spanning a narrow window when the mixed-capitals AP signature and tritium lume briefly coexisted.

The 25730 rewards the detail-obsessed. Its asymmetry is the charm: date at 2, second time zone at 6, power reserve floating toward 10, arranged with an almost Lange-like logic once the eye settles. The 48-hour reserve indicator was no afterthought, and the second time zone sets independently, genuinely usable. At 8mm thick, it wears like the Owl day-dates of the prior decade. Unlike the Beast or the Kasparov, it never earned a nickname, which may explain why one of the most usable complicated Royal Oaks ever made still flies gloriously under the radar.

This example features a great case with strong edges. It's watch only but comes recently serviced from AP in June of 2026 from a well-regarded Genevan retailer.