I think mirror plated is the mount at the back of the picture allowing the image to be hung solid to the wall from a single screw. I think.
Many congratulations. You must be well pleased.
This is exactly what I've been looking for for some time. People just look at me odd when I've described what I want. So, armed with this new information, I googled 'mirror-plated mount'. The only relevant hit on the first page was..... this very thread :bang:
Any more info on mirror-plating, Alasdair?
Congratulations Alasdair that's fantastic news and well deserved