Yes it's a glass in front of the monitor and a cardboard bezel mockup.
I bought an old nonfuctional cab (smelled like an old barn for a long time:-) stripped it down, .... same old story ...
The glass came with the cab. It does have a couple of scratches, but they are not noticeable.
It also had a transformer and a coindoor.
The footplate was 2 x 3/4 inch thick, but when I removed the front, it broke and looked ugly. I took the other 3/4 plate off and put a left over piece of flashing on top of it.
I have (12v automotive) lights on top and underneath the cab,
5.1 speakers waiting for the jukebox solution and
a button powered keyboard tray opening system, powered by a 12v motor.
My 21 inch Silicon Graphics display broke during freezing and extreme heat in the garage. Well, it works but has an hourglass distortion. The particular monitor adjustment doesn't work.
Now I'm pondering if I should replace it or not and if yes, should it be a tv,....