Original vintage Soviet made MVD Internal Troops (same as National Guard) officer uniform trousers. Made high quality heavy wool, this type of fabric was used in senior officer uniforms only. New never worn condition, see photos. Dated 1983, marked Russian size 48-3 or US S. In real life the pants feel larger, more like size 50-52. Measure 86 cm around the waist and 106 cm from waist to the bottom. Nice old Soviet made piece of uniform. 

650M300