It's pretty obvious that this is a 3D scan of a physical model. It would be cool to know where the original model came from. It has a close enough resemblance to the "Vanguard" model over at DAZ ( https://www.daz3d.com/vanguard ) that I would say they were both inspired by the same source. (although they are definitely not the same model) Would have liked it if the mesh was cleaned up a bit and individual material zones were created for...at least...the cockpit canopy and the engine exhaust. However, I do understand that this is being sold for only $5, so I can see why the author wouldn't want to spend a great deal of time working on it.