J502 (25) 1928 U.S. First Flight Covers; Better

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J502 (25) 1928 U.S. First Flight Covers; Better:
$24.99

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Nice, and quite scarce lot of (25) twenty-five; seemingly all different; U.S. First Flight Covers; all postmarked with 1928 cancels; and all with pictorial, hand stamped cachets. Even note First Experimental Airplane-Motorcycle Courier Service!. See Scan!!

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J502 (25) 1928 U.S. First Flight Covers; Better:
$24.99