In 1957, according to a special government order, an elite Antarktida (Antarctic) watch for the participants of the first Soviet expedition to the South Pole was developed. The First Soviet Antarctic Expedition was led by Mikhail Somov; his scientific deputy was V. G. Kort. The expedition lasted from 30 November 1955 to 1957 and involved 127 expedition members and 75 crew members.
Only a few hundred watches were produced and they were used during the expedition.
This is the first 24 hour watch from the Soviet Union.

Follow this link to see more photos of this watch: Antarktida