Worldwide, Collection of helicopter first flight covers. Over 275, U.S. from 1939, foreign from 1934, sorted by country and flight, nice group of foreign incl. some with better adhesives, Fine to Very Fine. Estimate $200.
Harmer-Schau Auction Galleries, Inc. 1333 North McDowell Blvd., Suite B • Petaluma, California 94954
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