1935 Moscow-San Francisco, 1r on 10k brown, horizontal watermark, n.h., v.f., signed Goznak, Mikulski, with certificate. A very rare stamp, only a few panes of 25 with horizontal watermark were overprinted (balance on vertically watermarked paper)
1917 Revolution overprints on Romanov stamps (private issue), total of six blocks of four, one block of eight and three blocks of twelve, total of 68 stamps
