OnTheDash
®
The definitive guide to vintage
Heuer timepieces.
Chronographs
1960s
Reference 7721
Reference 7721
Reference 7721 S
Reference 7721 S has chrome-plated case; silver dial and registers; matchstick hands
Reference 7721 N
Reference 7721 N has chrome-plated case; black dial with white registers; matchstick hands
Reference 7721 SN
Reference 7721 SN has chrome-plated case; white dial with black registers; matchstick hands
Reference 7721 NT
Reference 7721 NT has chrome-plated case; black dial with white registers; tachymeter scale on dial; matchstick hands