Is this original ?

[decojoe67]

Originally Posted by ALTEC9846-8A

This is a piece of dark plastic between the glass and CRT. I can't see it being original but also cant see why someone would put it in, The set is Canadian set built by Electrohome called the pageant sold under the name Viking chassis number TV50-340.

There was many aftermarket TV filters sold in the '40's and '50's. It likely was added later. Either way I would leave it out.