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

COLLECTION OF THOM AND HARRISON OVERPRINTS: 1922, 82 mostly mint stamps (three used), including set of five (plus extras) with black overprints, Harrison overprints on coil stamps, blue black and red overprints, set of 14, as well as blue black wider setting issue, the unit includes 8 blocks of four and 7 plate No. pieces (5 singles and 2 strips of three), full OG, NH or hinged, F/VF, C.v. $925++, Hibernian T15/46, C.v. is over €1,000, Est. $300-$400