Help identify RCA XL-100 Series

[Zeldaguy85]

Hey guys, I've recently received this RCA from a mechanic shop that closed down. No sticker labels or anything of the sort, just this part on the control panel door that says "XL 100". Tried googling that and found similar looking CRT's, but none that were quite like mine. Just curious to learn more about my specific peice, hopefully possible date range or anything else you guys could tell me. One last thing to note, and sorry I don't know the exact name for this, but if you turn the color knob down all the way, the B&W looks more like a Tan and white color, or a very warm black I guess. Anyways, TIA