Norway. Roald Amundsen's Attempted Flight to North Pole by flying boats ''Dornier Do J Wal'' 1925, double-sided small size postcard sent from USA to Norway on March 18, 1924 to be delivered to North Pole, upon arrival uprated by two Norwegian stamps, including Polar Bear 25o red issued to help financing the Expedition, cancelled by Kings Bay (Svalbard) and returned to Brooklyn, NY, mostly VF, Est. $140-$180 (Image)

Norway. Roald Amundsen's Attempted Flight to North Pole by flying boats ''Dornier Do J Wal'': 1925, double-sided small size postcard sent from USA to Norway on April 9, 1924 to be delivered to North Pole, upon arrival uprated by two Norwegian stamps, including Polar Bear 25o red issued to help financing the Expedition, cancelled by Kings Bay (Svalbard) and Kristiania (Oslo), then returned to New Jersey, VF, Est. $140-$180 (Image)

Norway. Roald Amundsen's Attempted Flight to North Pole by flying boats ''Dornier Do J Wal'': 1925, proof of double-sided postcard (all design on one side) issued by ''Gimbel Bros.'' by order of the Norwegian government to help financing the Expedition, size 100x135mm, printed on thin wove watermarked paper, fresh, VF and very rare, Est. $400-$500 (Image)

Norway. Roald Amundsen's Attempted Flight to North Pole by flying boats ''Dornier Do J Wal'': 1926, Polar Bear, 2o-25o, complete set of seven issued for helping to finance the Roald Amundsen Expedition, used on registered cover from Bergen to England, postmarked ''28.JA.26'' at New Castle on reverse, mainly VF and very attractive item, Est. $200-$250 (Image)