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desc_issuer: Colombia desc_year: 1921 desc_denom: 50c Related descs: issuer=Colombia-1920 issuer=Colombia-1922 Not used by any overprinted stamps. Used by 20 (0 visible) images: See images as array Matches 4 types: Colombia airmail 1921 50c bl issue=1921 air a d=MI 15 overprinted R unwmk Colombia airmail 1921 50c bl issue=1921 air a d=MI 15 overprinted R unwmk Colombia airmail 1921 50c bl issue=1921 air a d=MI 15 overprinted R unwmk Colombia airmail 12/19/1921 50c bl issue=1921 air c d=seaplane over Magdalena River unwmk |