cal. 1125 automatic nickel lever movement 36 jewels mono-metallic balance •  textured mother-of-pearl dial diamond indexes on outer chapter ring inner ring calibrated for date central date hand twin apertures for day and month subsidiary dial for moon phases with constant seconds • 18 white gold square case diamond-set bezel back secured by 4 screws • case dial and movement signed • with an 18k white gold and diamond-set Vacheron Constantin buckle