PATEK PHILIPPE REF. 3631 ONYX DIAL
Patek Philippe, Genève, No. 1362716, case No.
2757566, Ref. 3631. Made circa 1978
Very fine and unusual, octagonal, 18K yellow
gold wristwatch with an 18K yellow gold Patek
Philippe buckle. Accompanied by a fitted box
and hang tag.
Dial, case and movement signed.
Two-body, solid, polished and brushed, stepped bezel, snap-on case back, hooded lugs, cabochon sapphire-set recessed winding crown, sapphire crystal.
Onyx with yellow gold dauphine hands.
Cal. 177, stamped with the Seal of Geneva quality mark, rhodium-plated, fausses côtes decoration, 18 jewels, straight-line lever escapement, Gyromax balance adjusted for heat, cold, isochronism and 5 positions, shock absorber, self-compensating free-sprung balance spring.