This is the original Vintage Stripe, which I have duplicated. It belonged to my grandmother and was made for her, about 20 or 30 years ago, my mum thinks, by someone unknown, maybe her home help. It was at my mum's house under a cat, but I rescued it, and as possession is 9/10ths of the law, it is mine now, (at least for a while).
It is made in what appears to be 3 ply wool in a nylon/acrylic. Most of the wool is self-coloured but some is variagated.
The pattern is easy. It is basically treble/treble into the spaces of the row before, with a scallop trim border around the finished blanket. The tricky part was the right number of trebles at either end of a row to get exactly the same number as the row before. There were a few pyramid shapes before I mastered it.