PATEK PHILIPPE 

Ref. 3588
Case no. 2702856
Movement no. 1280211
Circa 1970
A 18k yellow gold automatic wristwatch
Case: round, crown bearing the Calatrava cross, screw-down caseback with key hallmark no. 1 engraved with the initials “P.T.”
Dial: blue “Sigma” dial, applied gold baton hour markers, gold hands, signed
Movement: automatic with Geneva Seal, signed – Calibre 28.255
Strap/Clasp: unsigned leather strap with 18k yellow gold (750) pin buckle signed Patek Philippe with PPC
hallmark Diam. 35 mm
Wrist circumference: 42.7 g.
With: Patek Philippe pen case (worn) and extract from the archives dated 9 June 1993 indicating that the watch was produced in 1970 and sold on 29 April 1971