The prototype of the K-36 movement, which was installed in the Salut watches, was the
Cortébert 620 movement. There is an opinion that it was the Cortébert 616, but the height of the K-36 corresponds exactly to the Cortébert 620, not the 616. From a comparison made by
Sergey Ivanov in the aforementioned article, it can be seen that the design and geometry of the Cortébert 620 are fully retained in the 1947 K-36 movement.
Interesting fact: the Cortébert calibers 618, slightly differing from the 620 series in height and configuration, were originally supplied to
Rolex, and through it as a contractor in 1930-1950 they were also supplied to the Italian
Panerai (to fulfill orders of the Italian Navy).
From a constructive point of view, there were two modifications of the Salut watch movement. The first modification was produced from the 4th quarter of 1946 to the 1st quarter of 1947, the second modification — from the 2nd quarter of 1947 to 1954. The modifications differ in the design of the balance assembly and the type of the pendulum spring spiral: in the movements of the first modification there is the Breguet spiral, in the movements of the second modification there is the usual spiral.
BRIEF CHARACTERISTIC OF THE K-36 MOVEMENT:
- Caliber 36 mm, H = 3.5 mm
- Movement on 15 ruby jewels, brass anchor fork (1946-1948) and steel anchor fork (1949-1954)
- The number of adjusting screws on the balance wheel — 16 (since 1946), 10 (since 1948)
- The second hand is at the number "6".
- The accuracy of the daily rate, at a temperature of 18 - 22 degrees C within 1 minute (during the period of validity of GOST 918-41), +/- 30 sec. (during the period of validity of GOST 918-53 standard)
- The running time from one complete watch winding is not less than 30 hours (during the period of validity of GOST 918-41), not less than 32 hours (during the period of validity of GOST 918-53 standard).
MOVEMENT CODE: "К-36" (caliber 36, movement outer diameter = 36 mm)
MOVEMENT MARKING:
"ЧК-6" (ChK-6)
"15 камней" (15 jewels)
logo — "Ч2З" (Ch2Z = 2nd Watch Factory. There are watches without logo marking on the movement (3 and 4 quarters of 1946, 1 and 2 quarters of 1947)
"САЛЮТ" (SALUT)
date of manufacture of the movement (quarter and year, in the format "X-XX")
factory number.