Vintage, 1970s, GOST Certification, Soviet-era

...“ГОСТ” (GOST – a Soviet/Russian quality standard)
“особо” (meaning “special”)
“Москва” (Moskva – Moscow)

A Soviet-era manufacturing label indicating the shirt was made in or regulated by standards in Moscow, Russia, under a GOST certification. GOST labels were commonly used in USSR-era textile and garment production to denote adherence to government quality standards.