Got a friend who has 3 of these wheels.
He was led to believe they were off a Monaro but I don't think they are. I think they may be aftermarket alloys and not genuine Vx ones but I'm waiting for him to reply with details on the markings on the rear. The 3 wheels are new, however 2 are slightly scratched somehow. I may buy them as he would take around Ł100 for the 3 of them I think.