Iceland. Facit 163, 164 cover , 1931 "Zeppelin 1931" overprint 1 Kr blue/brown and 2 Kr green-grey/brown on registered air mail postcard sent from Reykjavik by LUFTSCHIFF GRAF ZEPPELIN ISLANDFAHRT 1931 to Austria. Transit FRIEDRICHSHAFEN (BODENSEE) 3.7.31.
