U.S. Postal History Groupings, Airmail 1918, 1923 Issue Postal History, Selection of 25 franked with #C1 to C6, both first flights and commercial Air, many nice usages, Fine to Very Fine. Estimate $350-500.
Harmer-Schau Auction Galleries, Inc. 1333 North McDowell Blvd., Suite B • Petaluma, California 94954
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