Air Mail cover -- A collection in leaves with Shanghai type 1 First Flight handstamp on "Theodore Siddall" envelope, type 3 handstamp tying Air 15c. on opened out envelope (illustrated in Starr), types 4 and 5 handstamps cancelling complete Air sets on larger envelopes; some background information including illustrations of the five different handstamps. Ex Starr. (4)

Details
Air Mail cover -- A collection in leaves with Shanghai type 1 First Flight handstamp on "Theodore Siddall" envelope, type 3 handstamp tying Air 15c. on opened out envelope (illustrated in Starr), types 4 and 5 handstamps cancelling complete Air sets on larger envelopes; some background information including illustrations of the five different handstamps. Ex Starr. (4)