FRANCK MULLER. A MEN'S 18K WHITE GOLD AUTOMATIC DOUBLE GMT WRISTWATCH NO. 437 Model: Master Banker Case reference: 1200 MB Long Island Movement: Signed, automatic Dial: Signed, silvered guilloche, black Arabic numerals, blued spade hands, GMT subsidiary dials at the 12 and 6 o'clock positions, date aperture at the 3 o'clock position Case: Signed, brushed and polished 18K white gold, back secured by 4 screws, No. 437 Strap: Signed, black leather, signed 18K white gold buckle Size: 32.5mm by 45mm Weight: Approx. (32.5mm by 45mm.)