Gold mining design

(See all uses as list)

Colombia 6/1932 10c yel issue=1932 wmk=wavy lines (Colombia) perf=12.5

Colombia 3/1935 10c org issue=1935 perf=12

Colombia 12/5/1938 10c yel perf=10.5

Colombia 3/3/1939 10c redorg issue=1939 wmk=wavy lines & C multiple perf=12

New Zealand 1/2/1940 9p dporg&ol issue=Treaty of Waitangi 100th wmk=multiple NZ & star

New Zealand official 1/2/1940 9p dporg&ol issue=1940 official ovpt=Official on=issue=Treaty of Waitangi 100th-9p wmk=multiple NZ & star

Colombia 1944 5c redorg ovpt=5//Centavos oc=blk on=1939-10c-redorg wmk=wavy lines & C multiple perf=12

Colombia 1944 10c yelorg issue=1944b perf=12.5

Laos 12/31/1974 110k issue=Mineral Riches

Ghana 11/4/1985 100c issue=Unctad perf=14.25

gold mining