Here's a close up, the CRT socket looks original, the octal looks to have been added.
When I get a chance i'll have to see exactly which wires are jumpered to the octal, there are a couple of the wires to the CRT socket that have broken off so I need to figure out where they go first.
The ETF has the same set and it looks like the same half socket for the CRT but without the octal added.
http://www.earlytelevision.org/teletone_porthole.html