This was a total stroke of luck! The private tanner that I use noticed how many pied deer I was sending him and mentioned that his trapper friend had caught a pied otter years previous and he'd tried to mount it himself half way through he realized that taxidermy was harder than he'd though so he put the whole unfinished mount in the freezer (it was in a sitting pose) and left it there for years. Uncertain if it could be saved he sold it to me for 300$ and I soaked it off his form and presto!
It's a pied otter, I got it from a tanner who got it from a guy who half mounted it in a sitting pose and placed it in his freezer for a few years. I'm not sure where that guy got the otter, but I assume he got it from a trapper.