What do you mean by the EDGE bolts Jonesy? NO model 4 leftover parts were used on the model 5 Series 1. They were used on the STD/plain model 4.
The sticker is Definately Accurate for at least the most part of the Automatic run. (Definately on the Early Models). They never moved to milperra until 58.
The Image unkie Displayed is An Accurate Model 5 Toe ring. Although most Advert images show a single front tag.
Im aware of 4 variants.
Rotomo 2 2a early 4 bolt on clamps. And 6 small front, side and rear locating tabs. Special" 1 and/or 2.front locating tags and 2 bolt on rear/side clamps. Automatic clip on" side skirts. And your hoop example,which ive seen also. I Initially thought it was a made up job. But ive seen a few examples over the years that have shown it to be a release...Although ive not seen this example in any Victa Advertisment,as I have the others.
Anyways as you said we are getting a little of topic. Lets finish what hasnt been resolved for now and take it step by step.:)