TAIR ..... 300 mm / f: 4.8 ..... factory : KMZ, Krasnogorsk, USSR
year : 1944 ..... serial # : 1046 & 1013 .......
notes : Made for the Soviet Army during World War II. Possibly originally fitted to a KMZ FS-2 Fotosniper, but now with an added (non-factory?)extension, with M39 screw mount for use without the reflex housing of the FS-2. With red-orange filter.