Internet only Sale #4076 of Zeppelins and other aerophilately

United States, 1929 (7-29 Aug) Round-the-World Flight, Lakehurst-Lakehurst, cover franked $3.65 including 50¢-$2 (570-572), signed by both Dr. Hugo Eckener and his son, Knut Eckener, who was a member of the Zeppelin's crew; Zeppelin cachet faded, otherwise Very Fine.
Michel 31 Aa; €180+ ($220). Sieger 29.
Suggested Bid $130.