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desc_issuer: Mexico desc_issue: 1930 air desc_denom: 20c Used by 1 overprinted stamp: Mexico airmail 1931 15c brnol d=arms of Mexico & airplane oc=blk on=issue=1930 air-20c wmk=MEX & eagle perf=roul Not used by any images. Matches 1 type: Mexico airmail 1930 20c brnol issue=1930 air d=arms of Mexico & airplane wmk=MEX & eagle perf=roul |