Auction #94 WORLDWIDE AIR POST STAMPS AND POSTAL HISTORY

OVERPRINTS OF TYPE 4 COLLECTION ON STOCKPAGES: 1918, 209 mainly mint stamps (59 - used), including several strips and blocks, most valuable items are 29 inverted, 6 sideways and 1 double overprints, 3 tete-beche pairs, 3 stamps on vertically laid paper and numerous high values, valuable and neat unit, full/part of OG or used, F/VF, ex-Dr. Seichter and Dr. Zelonka, Bulat #1147/83, C.v. $3,880++, Est. $1,200-$1,500