I bought these backplates new from DMGRS. They were fitted for approx 12 months at the same time as new EuroCarParts sourced brake shoes, but I continued to have handbrake problems, and not knowing whether it was shoes or adjusters at fault, I replaced the whole lot with a fully assembled backplate, shoes, adjusters kit etc, which wasn't cheap, but it did solve the problem. So these backplates are in great condition after 12 months on the car, a little dusty, but otherwise look almost as good as new.
I'll throw in the shoes/adjusters in case they are of any use to anyone - so everything you see in the picture you'll get and hopefully you can make some good use of them. Really not sure what these are worth but I'll say £50 including courier delivery within mainland UK.
Edit: Now sold.