Russia, Soviet Union. Three Second War Defence Medals Archive and dated “1909”

and dated “1909”

dated 6 September 1935

]Sterling silver

with a central U-Boat set across the badge on a hollow background

He considered analogues of Fourier series and applied them to gamma functions

Russia, Soviet Union. Three Second War Defence Medals Archive and dated “1909”Medal for the Defence of the Soviet Transarctic (Polar Regions) (in brass, measuring 32 mm in diameter, original ribbon, mounted to a five sided aluminum suspension with pinback); Medal for the Defence of Leningrad (in brass, measuring 32. 2 mm in diameter, original ribbon, mounted to a five sided magnetic metal suspension with pinback); and Medal for the Defence of the Caucasus (in brass, measuring 32 mm in diameter, original ribbon, mounted to a