Iceland, Air mail cover, Facit 160 etc 1928 Aeroplane Surcharge 10 aur red and other foreign stamps on cover flown by Wolfgang von Gronau on his second survey with his aircraft "Grönlandswal". From Berlin 29.7.31 to List on Sylt, Denmark, via Reykjavik 11.8.31, to Scoresbysund and Godthaab, Port Harrison, Hudson Bay and to Conglac, Ontario, and at last to the final destination Chicago, USA. Signed by von Gronau. VERY RARE, ONLY 20 COVERS WERE FLOWN! Lüning 14 A 1. (Image1)