The "spearhead" is about 17,5 cm long, 4 cm wide with a hollow shaft. The top is most likely cast, the shaft made out of a metal sheet. The two barbs are articulated and when moved upwards form an arrow shaped head. It shows slight wear. The picture illustrates the front and backside of the spearhead. According to the New Bedford Whaling Museum it is not a harpoon.
Any information on this object would be highly appreciated (e.g. date, place of origin, function).

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