Audemars Piguet Coin 5610/5677

An extraordinary triumph of high-horology engineering, the Audemars Piguet $20 Gold Coin Watch is a iconic piece of 20th-century watchmaking history. Hand-crafted using an authentic vintage United States $20 “Double Eagle” Gold Coin, the coin’s outer rim conceals a secret spring-loaded push button at 3 o’clock that opens the top lid to reveal the hidden watch face inside.

Powering this ultra-slim masterpiece is the legendary in-house Calibre 2003—historically celebrated as the world’s thinnest manual-wind mechanical movement at a staggering 1.64 mm thick. Complete with official Audemars Piguet service documentation, this archival piece represents the pinnacle of mid-century Swiss horology and micro-engineering.