Picture Gallery Russia, 1 January 1913.
The 3k from the Tercentenary of Romanov Dynasty set, depicting Alexander III (1845-1894).
This is a double impression with one inverted. The stamp is not mine unfortunately, the image is taken from the website of Spink & Shreves who will be holding an auction of world famous inverts in June. Check out their catalogue, there's wonderful items to be seen!