Postcard "Vice Admiral S.O. Makarov"

The original postcard is in very good collectible condition. I didn't get the mail. Quite rare. Guarantee of authenticity. Russian Russian naval figure, hero of the Russo—Japanese War, oceanographer, polar explorer, shipbuilder, Vice Admiral (08/20/1896) Stepan Osipovich Makarov (December 27, 1848 [January 8, 1849], Nikolaev - March 31 [April 13] 1904, near Port Arthur) was a Russian naval figure, hero of the Russo—Japanese War, oceanographer, polar explorer, shipbuilder. The inventor of mine transport, the developer of the theory of unsinkability, the pioneer of the use of icebreakers. In 1895, he developed the Russian semaphore alphabet. He died during the Russian-Japanese war.