I suspect it's the original, but certainly couldn't say for sure. I didn't know that about the knurling - I also just saw looking back at that page that the position of the tote seems to have some dating characteristics. I believe mine is farther forward, so now I'm wondering if the plane is pre 1900 - (of course there is the possibility that it is a Frankenplane). Another thing about the tote on mine is that it is noticeably smaller than my other planes. When I grip it, the tote bottom and the top horn hug my hand fairly tightly - it's not uncomfortable, but it definitely feels quite different than any of my other planes.