Franck Muller, Genève, "Cintrée Curvex,” Ref. 7500 DS L. Made in a limited edition in the 1990s. Very fine, tonneau-shaped, water-resistant, jump-hour and regulator, two-time zone, 18K yellow gold gentleman's wrist-watch with moon phases, and an 18K yellow gold Franck Muller buckle. Two-body, solid, polished, engraved case back with 4 screws,domed sapphire crystal. Matte silver with painted Breguetnumerals for the minutes, subsidiary "guilloché" dial withRoman numerals for the second time zone and aperture for thejump hours at 12, subsidiary seconds dial and aperture for themoon phases at 6. Blued steel "spade" hands. Cal. 7500,rhodium plated, "fausses côtes" decoration, 17 jewels, straightline lever escapement, monometallic balance, shock-absorber,self-compensating flat balance-spring, micrometer regulator.Dial, case and movement signed.Dim. 29 x 39 mm. Thickness: 9 mm.