Lot 321
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U.S. Back of the Book Collections, Collection of Airmail.
Couple hundred incl. #C18 o.g., C7-8 and C24 plate blocks, C1-6 on covers incl. C3 on Jul 15, 1918 flight cover, plus more modern mint plate blocks and cacheted FDCs to 1957, Fine.
Estimate $350.
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| Realized $460 |
