Thanks for the info.The watch dates from 1967, it was made by Lip and rebranded as a Stowa Seatime.
WR was 200 meters and the case width excluding crowns is 36mm, but it wears much larger.
The case was made by EPSA. "EPSA" stands for E. Piquerez SA, a Swiss company specialized in the manufacture of diving watch cases. In the 60's they had 3 types of cases called the "Compressor", "Compressor 2" and "Super-Compressor".
EPSA sold their cases to the most prestigious brands and manufactures as Enicar, IWC, Bulova, Hamilton, Omega Longines, Lip, Universal, Tissot, Eterna, Jaeger Le Coultre, Zenith, Zodiac and many others.