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desc_issuer: Peru desc_function: airmail desc_year: 1937 desc_denom: 10c Related descs: issuer=Peru-1936-10s issuer=Peru-1938 issuer=Peru-type=airmail-1936-5c issuer=Peru-type=airmail-1938 Not used by any overprinted stamps. Matches 1 type: Peru airmail 9/15/1937 10c vio issue=Inter-American aviation conference d=first Peru flight unwmk |