I can't make sense of your picture either, but I'm wondering whether "cheap plastic" might be what you need.

Compact Discs are made of vapor deposition coated, polycarbonate plastic. Somewhere out there there are dumpsters full of junk CDs. I'm also led to believe that polycabonate can be die cut, so in theory you could punch a whole lot of shiny discs (up to about 1 1/4" diameter) out of cheap or free plastic. Also if 4.7" shiny discs are what you need, there's no need to do any cutting.

No guarantees that any of the above will work as intended, but it might be worth experimenting a little.