This Zorki-1 #366336 was sold on ebay 151918503389 for peanuts. Serial should be a late 1c but body is a 1b. First I thought here was an additional digit added to the serial by mistake, but now I have no idea. The top-plate on the left side shows the early version. The shoe has different color and is the later version. 3 screws on the back like on 1b. Under the base-plate 1b technic. The lens from 1953 match with the body serial.