IWC. An 18K gold automatic perpetual calendar wristwatch with moon phase
Model: Ingenieur
Reference: 3540/1
Date: Circa 1990
Movement: 21-jewel Cal.3758 automatic, adjusted to 5 positions, No.2416628
Dial: Black, applied gilt baton hour markers, outer minute divisions, champagne subsidiary dials at 3, 6, 9 and 12 for day, date, month and moon phase, year indication between 7 and 8, gilt baton hands with luminous inserts, centre seconds
Case: Brushed and polished tonneau form, screw down back, No.2462185
Strap/Bracelet: Black leather
Buckle/Clasp: Associated gold folding clasp
Signed: Case, dial & movement
Size: 34mm
Accompaniments: IWC box, 18K gold bracelet, spare calendar markers, Instruction booklet
