August 17, 2026
Before 1964, watches produced by the factory often featured the markings 1MChZ or 1MChZ im. 1MChZ stands for First Moscow Watch Factory (Russian: Первый Московский Часовой Завод). For collectors, the 1MChZ marking is significant because it generally indicates a watch manufactured before 1964, making it an early example from one of the Soviet Union's most historically important watch manufacturers.
