6c-24c 1918-23 Air Post, 50c Chicago Zeppelin (C1-C6, C18). Singles of C1-C6 (extra C4-C5) plus blocks of four C4-C5, two singles and block of four of No. C18, three or four stamps Mint N.H., all Fine-Very Fine except bottom left C4 in block is a Mint N.H. Extremely Fine Gem and one single C5 lightly hinged wide margined Extremely Fine Gem

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