Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Germany - 1934, O. Lilienthal and Graf von Zeppelin, 2m green and black, 3m blue and black, bottom right corner sheet margin blocks of four, full original vertically applied gum, NH, VF, C.v. $1,060, Mi #538x-39x, C.v. €1,520 as singles, Est. $500-$600 , Scott #C55-56