Cal 2552PC

(c): Mars Mountain

ZENITH movement cal. 2552PC, This caliber was produced around 1969 (15 000 pieces made). 23 jewels, automatic movement @ 21600 A/h. It features a date wheel and center positioned sweeping second hand. A later version (2572PC) also features quickset for adjusting the date, as well as a higher beat rate (28800 A/h).

This particular one, made in 1970, runs fine except when it is time to switch date. It definitely needs cleaning and new oil. The rotor seems to have been touching the case as well. I like this watch a lot, I find most models of the Respirator series quite attractive. There are a lot of cool designs from the 70's!