This is a rework of an old model made years ago in Lightwave. The ancient version had some flaws, esepcially with a somehow errztic UV unwrapping. In this version, I have corrected a lot of things, starting from the geometry (cleaning of degenerate polys, fusion of double points, etc.), a complete UV unwrapping overhaul, and texture painting in 3DCoat.
I painted the textures in 8K sets, but on sketchfab, the model only has 4K sets of textures for faster uploading of textures.