Russia, Soviet Union. A Lot of Graduation Badges

A lot of three Soviet graduation badges, including a Leningrad Forestry Academy Badge, constructed of gilded bronze with multi-coloured enamels, the reverse with a screw and backplate, maker marked “МОНЕТНЫЙ ДВОР” for the State Mint, measuring 27.16 mm (w) x 47.72 mm (h), in extremely fine condition; a Leningrad Electrotechnical University badge, constructed of gilded bronze with multi-coloured enamels, the reverse with a screw and backplate, maker marked “МОНЕТНЫЙ ДВОР ЛЕНИНГРАДСКИЙ” for the Leningrad Mint, measuring 24.69 mm (w) x 53.36 mm (h), in extremely fine condition, and; a Leningrad Institute of Fine Optics and Mechanics badge, constructed of gilded bronze with multi-coloured enamels, the reverse with a screw and backplate, maker marked “МОНЕТНЫЙ ДВОР” for the State Mint, measuring 23.97 mm (w) x 52.09 mm (h), in extremely fine condition.