Heuer

Reference 3647 Carrera 

A stainless steel chronograph wristwatch, Circa 1965

Dial: black

Caliber: mechanical, 17 jewels

Case: stainless steel, screw down case back

Case number: 74’521

Closure: stainless steel Heuer buckle

Size: 37 mm diameter

Signed: case, dial and movement 

Box: no

Papers: no