erla and what is it?

[teevee]

4 wires going to the speaker (and output transformer peeking out from the bottom). That would jive with what the schematic shows. One from the rect to the speaker field, one coming from the speaker field back to the set (and the center tap of the OPT) and the 2 plate leads. The wire between the speaker cable and green tag appears is just hanging there, not connected to the speaker. I'd suspect that was the antenna lead, with the black wire (green tag) being ground.