Weird "sword"

[Ian]

This one was sold recently at auction. It is not mine and the attached images are from the auction site.

This sword length object (OAL = 29.25 in.) has an unusual blade that appears to be old. There is a date at forte of "1707" and the letter "J." Two spikes emerge from the sides of the blade about 5-6 in. from the tip. Perhaps this a refashioning of the original blade--if so, it was done a long time ago. In some ways, these spikes remind me of a harpoon. The hilt appears to be wood or perhaps a copper alloy, maybe brass/bronze--hard to say from the pictures.

I've not seen another like it. Anyone know what it is or where it may be from?


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