a gold skeletonized automatic perpetual calendar wristwatch with moon phases, Vacheron Constantin, Genève, Movement No. 742124, Case No. 513895, Circa 1990

18k, gilt skeletonized movement, 36 jewels, pierced 21k gold rotor, glucydur balance, the movement and rotor engraved overall with scrolls, four subsidiary dials indicating day, date, month, leap year cycle and moon phases, sapphire crystal, circular case with 18k gold buckle, case, dial and movement.