Sowjet Union: 1919/1920, imperf. proof for a not realised issue in design of 191
Sowjet Union
1919/1920, imperf. proof for a not realised issue in design of 1918 commemoratives "1st Anniversary of October Revolution", 1kop. yellow-brown with new country name "POCCИЯ" instead of "ROCCIЯ", single die proof on cream thicker paper, sized 5:6,7 cm, corner crease at top right and hinge remnant....