Air Post Issues, 1918-38.
Over 40 better items on stock pages, incl. blocks of four of Nos. C1, C3 (five, variety of positions) and C5, two strips of three No. C5, two plate blocks of six No. C4, singles Nos. C2 and C6, four C13 singles (two used), three C23a error pairs and a C23c color error, C3 plate block of twelve, C10 ten plate blocks of six, C10a booklet, C12 four plate blocks of six, two C18 plate blocks of six, couple better booklets, two C13 first day covers (one a flown card, heavily creased, other on large size unflown envelope), also April 24, 1930 registered usage from Boston, tied by mute double oval on a Miami-Tacna, Peru First Flight Cover,
appropriate Miami, Cristobal C.Z. and Tacna registry backstamps, single C18 and two C18 vertical pairs tied by New York Oct. 2, 1933 First Day grid duplex circular datestamps on two separate covers, also two other single C18 covers, one signed by Hugo Eckener plus 1929 letter written and signed by Eckener, fair number of the unused stamps are Mint N.H., overall Fine-Very Fine, with three certificates
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