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Well, looks like WW243 is right. Bummer... Hoped to learn something weird about a previously unknown item...

I'll take a stab in the dark and say that the handle part was from an Ivory Comb and...

Replying mostly so I can follow.

Interesting piece for sure. The Handle just does not look to match the Blade to me and the Blade at the top (spine) of the Toe looks exactly like modern 0-1...