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I ain't been in that neck of the woods in twenty + years. Steve Ferguson still got Ink Spot ? There's probably a slue of other shops now. Anyway, looks like you know what your doin'. :tu

Looks like a wedge to me. Appears to be symmetrical, a Kamasori is asymmetrical IIRC.

I see you're in Elizabeth, I used to live in Kearny. If you ever feel the urge for a tattoo go see Ron Lopez...

It would appear to me, from the photos in the OP, that there is significant hone wear at the spine. If that is correct, and it is not a result of camera angle, or whatever, than I would say the razor...