desc_issuer: Panama desc_denom: 1c desc_color: blgrn desc_denom2: 1c (# 13906) Used by 1 overprinted stamp: Canal Zone postage 7/18/1904 1c blgrn ovpt=CANAL ZONE//PANAMA oc=blk on=issuer=Panama-1c-blgrn Not used by any images. Matches 2 types: Panama postage 12/1936 1c blgrn issue=4th Spanish-American Postal Congress d=Panama tree unwmk perf=12 Panama postage 3/1/1937 1c blgrn issue=1937b d=Panama tree ovpt=U//P//U oc=blk on=1936-1c-blgrn-Panama tree unwmk perf=12 |