You're
right that they (the markings on the boards) might be common, though
I certainly haven't seen any Lisas with green CRTs, myself.
Now, I've never tried to replace the CRT in something like a
Lisa or other single piece machine, but I wouldn't think that the CRT
would be that difficult to replace? For companies like Zenith that
actually manufactured CRT's, I could see there possibly be a problem
with swapping it out for a different one though but I know that Apple
didn't manufacture the CRT's in the Lisa.
Difficult you mean in terms of finding a replacement, I assume...
it *is* fairly easy to replace on in a Mac, procedure-wise,
but I had a boxed new Apple replacement to drop in...
-dq