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Stamps,
minerals (1997 Ecuador)
design type
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1 to 5 of 5
Ecuador
postage
1997
, Oct 6
International Mining Congress 1997 issue
-
minerals (1997 Ecuador)
unwmk
(no perf info) (5 stamps)
-
400s
multi
quartz
-
600s
multi
chalcopyrite
-
800s
multi
gold
-
2000s
multi
Silicified wood
-
2600s
multi
pyrite
1 to 5 of 5