Note that 10265 is mentioned as being used in an exhibit in Berlin in 1880 on p. 61 of USNM Bulletin No. 18.
Described p. 107 in Brown, James Temple. 1883. The whale fishery and its appliances. Washington: Govt. print. off.: "Eskimo Whaling-harpoon. Pole, wood; ivory tip recessed for walrus ivory spear or shank, which is lashed to the pole with thongs of raw hide. Length, 8 feet 3 inches. Northeast coast."