Original WWII US M3 Binocular body covers, part numbers 7638084 (right) and 6174600 (left). Unpainted with slight wear, but overall very good condition. 
 
Army Technical Manual TM 9-150 and Air Force Technical Order TO 38-1-1 covers ordnance maintenance of the binocular models M3, M7, M8, M9, M13, M13A1, M15, M15A1, M16, M17 and M17A1 and BC Telescope M65.