desc_issuer: Czechoslovakia desc_denom: 30h desc_color: bis desc_perf: imperf Used by 1 overprinted stamp: Eastern Silesia postage 1920 30h bis issue=1920a d=Hradcany (1918) ovpt=SO//1920 oc=red on=issuer=Czechoslovakia-30h-bis-imperf unwmk imperf Not used by any images. Matches 3 types: Czechoslovakia postage 1918 30h bis issue=1918a d=Hradcany (1918) unwmk imperf Czechoslovakia postage due 1918 30h bis issue=1918 due unwmk imperf Czechoslovakia postage due 7/8/1925 30h bis issue=1925 due ovpt=30 oc=blk on=issue=1918 due-15h unwmk imperf |