Lot: 237
Submarine Mail. Jan.1917 Cover, Germany to USA, carried by U-Boat, (Tauchboot), the delivery unsuccessful, and returned with 3-line cachet and BREMEN / T.B. / D.O.R. receiving mark.
Lot: 238
Covers & Cards including 1935 Mauritius ‘Bicentenary Exhibition' with Silver Jubilee set; 1936-37 Rocket Post from Belgium and India; 1941 Air Mail from Benghazi to India; 1944 Alaska dog team; 1935-37 Glider and Parachute mail of Austria (3) and Netherlands; 1931Wilkins-Ellsworth Trans-Arctic Submarine, USA to Norway; 1933 Germany balloon post; and various others. (63)