For whatever reason, KLOV was not letting me know you guys were active on this question. I was all ready to get all biblical on you.
In the meantime, I finally answered my question.
First off, do not go to TAP plastics. They are not so fantastic when it comes to stocked supplies.
The correct tint is called Transparent Bronze #2412
The dimensions are 23 5/8" x 17 7/8"
I had 3 choices in Oakland for plastic.
Mr Plastic "identified the tint, but out of stock"
TAP "not available, didn't know the industry standard numbering system"
Interstate Plastics "available, cost $34 for precut sheet."
The Plexi was readily available online as well from various shops in Los Angeles.
Just google the correct name above or ebay it.
My machine came with the the transparent bronze layer in front. The previous owner was a chiropractor and got it as payment for services back in the mid 80's. I doubt he would have swapped plexi layers so I believe the bronze layer in front is correct.
The clear with stencil sheet is in nearly perfect condition.
All together it looks awesome now.
Though I do wish I had seen the previous post for $18+$8. Oh well.
I am looking into a modification using antiglare plexi as an additional layer or instead of the clear layer. I have a big poster encased in anti-glare Plexiglas that has a crack, so I will have a piece cut out from it shortly to test it out.
Thanks for all replies!
TrevEB