Vianney Halter Antiqua Perpetual Calendar Case: Yellow gold case 750/1000 in "Steampunk" design, alligator strap with original golden buckle;Dial: 4 differently sized "porthole" dials with arabic numerals and letters, date hour and minute indications at 2 o'clock, date window with loupe at 4 o'clock, leap year and month indications at 7 o'clock, weekday indication at 10 o'clock, signed: "Vianney Halter" ;Movement: Rhodium-plated automatic movement with Geneva stripes and perpetual calendar ;Cal.: VH-198;Ref.: 11Y.35.A;Movement No.: 11Y;Case No.: 11Y.35.A;Accessories: Box and papers ;D=: ca. 39,5mm;Year: ca. 2000; Starting Bid : 50000