A GOLD PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES AND LEAP YEAR INDICATION, IWC, 'PORTOFINO', CIRCA 2000

18k, nickel lever movement, 39 jewels, glucydur balance, white matte dial with applied baton numerals, gold baton hands, three subsidiary dials for day, date and month indication, four-digit year display between 7 and 8, aperture for moon phases, center seconds, polished circular case with down-turned lugs, water-resistant type screw down case back, case, dial and movement signed, with an 18k yellow gold IWC buckle.