Originally Posted by Seaflyer02
Looking at the valve that looks like what was used on the "Campari" range of inflatables. These were made from a lightweight type hypalon fabric.
I had a couple of these back around this era and from memory the round tail ones were hypalon and the transom dingys were neoprene.
The neoprene ones (that's what I had) were pretty fragile and I'd doubt there would be many of them still around.