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Folk art, chip-carved crooked knife with a raised coffin handle inset with a gem tintype of a young woman
Cowan's Auctions, Inc
In Russell Jalbert & Ned Jalbert, 2003, Mocotaugan: The Story and Art of the Crooked Knife, pl. 13 is an illustration of a crooked knife with a non-photographic portrait.
I'm indebted to Rich Rasso for this information (Facebook, private message, 15 Aug 2015)