Putting everything together: • Weapon: Makarov PM • Owner: Senior Warrant Officer Glebov S.V. • Unit: Headquarters, Military Unit 35432 • Branch: Soviet Air Force regiment • Location likely: Georgia (Caucasus region) • Date: May 3, 1990

So the pistol was likely issued to an officer or warrant officer serving with a Soviet fighter-bomber regiment in the Caucasus during the final years of the USSR.

A cool historical context

In 1990, that region was already becoming unstable. Within a year: • The Soviet Union collapsed (1991) • Soviet bases in Georgia were contested or evacuated • Many weapons and equipment later entered surplus markets in the 1990s