Case is 38.5 mm diameter, 18k yellow gold, caseback is sapphire glass, JP Hagmann case . Movement is manual calibre, worldtime chronograph, Janus with multiscale chronograph on the back. Alligator strap with 18k yellow gold Franck Muller pin buckle. Caseback engraved Pièce Unique, circa 1991. Case, dial, movement and buckle signed. Accompanied by undated and unstamped Certificate, instructions of use and fitted box (modern). Estimate at CHF50k to 100k.  Sold for CHF 190,500 at Phillips Auctions May 10 2026 Geneva