I recently got this uniform off a Russian website, but I the website did't specify which it was, and I haven't been able to identify it using google searches? Anyone here know?
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/
Uniform looks consistent with Soviet Army uniform, except for the belt.