IWC REF. 3513-1 PORTOFINO STEEL
International Watch Co., Schaffhausen, Automatic, case No.
2591504, Ref. 3513-1. Made in the 1990s.
Fine, center seconds, self-winding, water-resistant, stainless
steel wristwatch with date and a stainless steel IWC buckle.
Accompanied by a fitted box, warranty and instruction
booklet.
Two-body, polished, straight lugs, case back with 4
screws, sapphire crystal.
White with applied steel baton indexes, outer minute
division, aperture for the date. Steel baton hands.
Cal. 37521, gilt brass, oeil-de-perdrix decoration,
21 jewels, straight-line lever escapement, monometallic
balance adjusted to 5 positions, shock absorber, self-compensating
flat balance spring, micrometer regulator, hack
mechanism.