airmail 1931, complete stamp booklet pane with margin as well vertical se-tenants 8 plus 15 plus 8 plus 15 Pfg Help for the Needy 1930 from MHB on Zeppelin card from FRIEDRICHSHAFEN 30.6.31, transported with LZ 127 on the trip to Iceland, Zeppelin flight stamp and arrival Reykjavik 1.7.31 on face, faultless