Hi everyone my window has come out of the raising and lowering mechanisms plastic retaining clip which have broken anyway to get them or alternative solutions
one of mine has the plastic stud and spreadable plastic rivet like yours
the other has 2 washers 2 rubbe.r washers and a small cylinder of nylon held in place by a small bolt with a lock nut done up loose enough just to compress the rubber. mine is an aussie A body and has a slightly less complicated window lifter... that fat plastic spacer is not used on mine just the plastic rivet with a spreader pressed in
I got these from ebay in the USA, delivered here. It was a full set of the correct clips, which as Dave said, are a sort of plastic bits with four legs that spread with a big self tapper when screwed in.