Yep, this is definitely back from the no-grade days. I picked it up from PB as an oddity because it was cheap, and if we never get another Devil Gundam, well, it's fine I guess.
What did you use for nub cleanup? I've got a no-name glass nanofile that I got for cheap on Amazon. Between that and some soft-backed fine nail files/buffers, most plastics come up super glossy. Clear pieces can be hit and miss, but as long as the snip didn't stress too deep it's usually okay.