Looking at the model a little closer, the shape of the head looks good. It's painted on Gold 3 (a.k.a. MoM) paint scheme, some of the scratch marks mimick the original, but the white stripe on the side is considerably wider. A head cast from original molds, maybe a pyro head? I couldn't tell.
Interestingly, the droid is painted to match the one on Gold 3 as well. Silver head, dark panels, red stripe and warm white body. Only, that droid is not correctly shaped, the leg shoulders are low and there is what looks like a collar near top below the dome.
The body is put together with everything but original parts, nothing on the surface really matches. There may be pieces of 8-Rad on the neck but I'm not sure of that. Rear steering vanes look like they could be close to the original, but with my identification skills I cannot confirm that for certain either. What looks like a match underneath all the detail parts is the shape of the body just behind the droid. The facets on top of the wide part look the same. Good lines on the aft as well.
Why would ILM build a Y-wing body with little to no match to the original models? They certainly had the reference and know-how. Unless this comes from something similar than the Bill George model. Did ILM source fan builds for JEDI? This is one of them, but perhaps with a head from original molds?
What do you who know these things have to say to this? What is the story of this interesting mystery model?