Heuer. Lot de deux chronographes stopwatch compteurs de bord en...

Heuer. Lot de deux chronographes stopwatch compteurs de bord en acier remontoir au pendant
Heuer. Set of two stainless steel dashboard keyless wind chronograph stopwatches
Date: Circa 1970
Movement: 7-jewel Cal.7700/7710 manual wind
Dial: Left: silvered, black outer 1/100th second divisions, red inner 60 minute recording, pointed baton hands. Right: silvered, black Arabic numeral second markers, subsidiary dial at 12 for 30 minute recording, blued steel pointed hands
Case: Brushed and coated round, snap on back, start/stop button pushers and winding crown at 12, No.732232/ No.654317
Signed: Case, dial & movement
Size: 52mm
Accompaniments: Heuer dashboard set and 4 screws