Lot
2726 
1931, Wilkins-Ellsworth Trans-Arctic Submarine Expedition, 4 different covers, all with purple Expedition cachet and typical dual franking for mail associated with the Expedition; two with U.S. & Great Britain franking and endorsed "New York to North Pole"; the other two with U.S. & Norway franking, endorsed "New York to Bergen", one with unusual printed cachet of accordian player. Estimate $150 - 200.
Realized: $100