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desc_issuer: Upper Silesia desc_issue: 1920c desc_denom: 1m Used by 1 overprinted stamp: Upper Silesia postage 3/20/1921 1m cl d=dove over mines larger ovpt=plebiscite oc=blk on=issue=1920c-1m unwmk Matches 1 type: Upper Silesia postage 3/26/1920 1m cl issue=1920c d=dove over mines larger unwmk |