Lot 10625 – 1909 Double picture postcard of a Zeppelin in flig

1909 Double picture postcard of a Zeppelin in flight over Lake Constanz (aka the Bodensee), opened up to reveal a booklet about the Zeppelins entitled, “Zeppelins Erfindung” by Herbert Schanz (and issued in conjunction with the National Fund for Graf Zeppelin), franked with pair of Bavaria 5pf tied at Lindau and sent to Portugal (Lisboa bs), slight faults but a most unusual item, fine collateral / display item