Vacheron Constantin Ref. 48002

The watch was launched in 1980. It features a snap-on back case.  The inside of the case back is stamped 18k white gold.

 

Vacheron Constantin Ref. 48002

CIRCA: 1980s
CASE MATERIAL: 18k white gold
DIAMETER: 33mm
BRACELET MATERIAL: Black Calf Leather  
DIAL: White 
MOVEMENT: Automatic
FUNCTIONS: Time and date
CALIBER: 1130