I've recently bought a Superfast display case.
![Image](http://i508.photobucket.com/albums/s329/matchboxforsale/DSCN0703_zpsdc0f4eaa.jpg)
![Image](http://i508.photobucket.com/albums/s329/matchboxforsale/DSCN0702_zps59ecf2be.jpg)
As you can see in the photos, the case itself is in reasonable nick but the cover has become tarnished through either sunlight or smoke damage. Personally, I believe it is beyond restoration but would like a second opinion before I pursue my other options which are: -
1) Produce my own replacement using a sheet of acetate or;
2) Commission a plastics vacuum company to replicate the originals (although I doubt this is feasible due to the likely cost).
Any suggestions welcomed, thanks.