Auction #93 Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World

NICE ASSEMBLAGE OF TYPE 7: 1918, 71 mint and used (25) perforated and imperforated stamps, mainly singles and pairs, but includes several strips and blocks, 12 values with inverted overprint (perf 1k, 2k and 5k are not listed 20k priced with ''-'' in the Cat.), 1 tete-beche pair and many more, full OG or used, F/VF, C.v. $2,300++, Est. $800-$1,000