1930 Finland Flight cover from Helsinki to Stockholm, franked with vertical pair of 10M "Zeppelin 1930" overprint, with Friedrichshafen arrival pmk on back, cover with tape stains at sides, otherwise fine-v.f. (Cat No. C1) (Image)

Est.$250

1931 (18 May) Magdeburg flight card from Helsinki, with 1931 franking (toned), sent via Danzig where 50pf and 1m was added (27 May), with appropriate cachets, fine combination franking (Image)

Est.$500