This 1972 Audemars Piguet Royal Oak Ultra Thin 5402ST is the is original AP Royal Oak as envisioned by Gerald Genta; this Royal Oak is among the first 2,000 pieces created in 1972 at Audemars Piguet's watch factory in Les Brassus, Switzerland. The Royal Oak Jumbo 5402 is encased in 39mm of stainless steel surrounding a black dial on a steel bracelet. Functions include hours, minutes, and date. The watch also measures 7.2mm in thickness and 47.9mm from lug-to-lug.

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