Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3
Lot 1465:
EXCELLENT HOLDING OF TYPE 8: 1918, 139 mint and used (54) perforated and imperforated stamps, representing 20 inverted overprints, 1 tete-beche pair and 3 double overprints, including invert on 4k priced with ”-” and on 14k/20k not listed in the Cat., clean grouping, full OG or used, F/VF, some signed by well-known experts, ex-Dr. Seichter or Dr. Zelonka, C.v. is well over $3,500, Est. $1,000-$1,400, Bulat #1279/308
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