I won an auction a few days ago for a "vintage" model Maxyzmodule. Got it for $32 shipped.
The auction said it had a defraction grating also. I got the package 3 or 4 days later and the box had a bunch of extras in it.
A couple of beamsplitter cubes, another grating, a wierd 4 sided pyramid thing , and two BIG mirrors that look to go on scanners. They have some kind of certification for each mirror.
One is close to 1 inch by 1.5 inches and the other is probably .5 inch by 1 inch. It looks like a scanner with a 1/8th inch mirror holder could fit them. Anyone know what these go to?