The mystery thickens
My gut feeling still says Pacmin, especially if that stand is original and has always been with that model, which I suspect it probably has. I have this Wesco A300, and it has about half the weight of a comparable Pacmin model, the upper wing surfaces have decals also, the stand on it is original. BTW, what look like missing parts of some of the door outlines is due to the lighting. It’s one of my favourite models.