A bit of online research found me a photo of what it should look like so I set about cleaning it up. It turns out the handle was on upside down.

By good fortune I had a couple of pieces of rod in my stores that would make a replacement for the depth guide. I had a choice of Nickel Silver or Silver steel so I chose the latter. as being more suited to a machine.
I turned a 60 degree point on it as looking about right from the photo and then milled a flat for the work piece to rest against.

Next I went over it with a wire brush in my Dremel and I was pleasantly surprised when most of the surface rust came off leaving the painted surface underneath. I quite like the lived in look so I am not going to repaint it as I had originally planned. all that remains is for m to fasten it to a suitable piece of wood and hopefully to make some addition anvils for it.

In my searches I determined that as bought they came with 4 anvils whereas mine only has one at the minute. The good news is that a member of Western Thunder has one of these so I have asked if he will take photos of the additional anvils and get me some key dimensions and I will have a go at making some more. I recently scrapped a duff Compound Mitre saw that I had, had for 20 years. Before scrapping it, I recovered lots of useful bits of steel and aluminium. One of the former should be just right to make the anvils.