try and track down a Dutch Guy known as the Flying Dutchman as he has a big catalogue of backglass / translite art and backglasses to translite. I know it is not idea but could be better than nothing. I have not heard of him as late so might be a little more of a mission as might of gone underground as had a huge range.

quick search dug this up, hope this helps

http://www.pinballnirvana.com/forums/showthread.php?p=71270