Colombia, Airpost; 1920 "Compañia Colombia" 10c Red Tete-Beche Strip of 3, Sanabria #16a, ungummed, Very Fine, 1992 P.F. cert for strip of 4. Sanabria $1,500. Estimate $300-400.
Harmer-Schau Auction Galleries, Inc. 1333 North McDowell Blvd., Suite B • Petaluma, California 94954
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