Anyone recognise this Emerson? I can't find a model #...

[RetroHacker]

This set has been sitting in my basement for a while, awaiting repair. It's an Emerson, 21", and it has a good tube - it was a new replacement in 1970, according to the tag on the tube. Now, this set doesn't have a back, and I can't find a model number anywhere. I pulled the chassis to check it out, and cleaned out some of the incredible filth. The filters were replaced in the past, but they of course will need to be replaced again. But, I really would like to find the schematic. There were other repairs done to this in the past, and I'm not so sure that all the correct parts were used. (judging by the masking tape used to hold the filters in place...). There is also a capacitor, hanging by one lead under there. Not sure what it's supposed to go to... So - anyone know the model number of this?

-Ian