Upvote:0
Uniform looks consistent with Soviet Army uniform, except for the belt.
Upvote:1
The belt is certainly not authentic (it is nothing even remotely close to anything ever used by the Soviet Army).
The pants might be gallifet-style, but they were long gone by 1970-ies.
The shirt lacks pockets and is buttoned the wrong way.
The preponderance of evidence points to the "uniform" being fake.
Source: I lived in the USSR and I remember how soldiers looked like. See also https://forma-odezhda.ru/encyclopedia/voennaya-forma-sovetskoj-armii/