Audemars Piguet

A yellow gold automatic skeletonized wristwatch, Circa 1970

Dial: skeletonized

Caliber: cal. 2120 automatic, 36 jewels

Movement number: 157'312

Case: 18k yellow gold, snap on sapphire crystal display back 

Case number: B 4507

Size: 33 mm diameter

Signed: case and movement

Box: no

Papers: no