The Monaco wristwatch was one of the first automatic chronographs offered in the market. In 1972, Heuer released the manual wind reference 73633, which retained the uniquely shaped case, however resembled a classic chronograph with the winding and setting stem on the right-side of the case. The reference was produced with three dial styles, blue with white registers, grey with grey registers and like the present watch grey with black registers.

Ref Variations: 73633B,