Moduvatorさんのイラストまとめ

I dont recall seeing that in-game... The model has a name of "tus_test" and appears to be fully animated but not used ultimately. Some vertex normals data was also corrupt.

I think I got it mostly working. On this model I'd lost 2 triangles out of around 1650 which IMO is a fair achievement.
Odd pattern around the stars is a glitch in Blender, exposing background colour, I'm sure there's an option to fix this.

Here is the bit where you step away to think carefully of what you've just done. A valuable lesson learned and a theory confirmed though.