Nice sets, I think the hole on the left shouldn't be there though.
I rebuilt one of these last year for someone and they are an interesting set, it doesn't use a Flyback transformer, instead it has an oscillator type HV system like the electrostatics, it also has a very strange slug type tuner with a weird linkage system.
http://cgi.ebay.com/ANTIQUE-Raytheon...3A1|240%3A1318