1971 Zenith Defy ref. A7681. Made in 3 colors from 69 to 72, around 5000 each.

The A7681 is the first Defy Tonneau case, automatic movement cal. 2562PC.

A 7681 (khaki) – A 7682 (red) – A 7683 (blue)

Zenith is a luxury Swiss watch manufacturer founded in 1865 by Georges Favre-Jacot at the age of 22. Zenith was purchased by LVMH in November 1999, becoming one of several brands in their watch and jewellery division.
Zenith has a long reputation for the quality and precision of their watches. It is one of the few Swiss watch manufacturers that still produces their own movements in-house, including the Zenith el Primero – one of the first automatic chronograph movements from 1969.