The dial mechanism & escutcheon is a EFCO " Senior Ship" with a wedge drive and travelling light. They typically date around 1932/1933.

Well, I've re-assembled the radio and it's pride of place in the lounge room thanks again all for the info. I have my Edison Fireside phonograph sitting on top of it

I'm thinking now i'd love to be able to connect my ipod into the radio to play my old time radio serials. I have done this in the past by simply wiring a switch in-line with the volume pot. This radio seems a little more confusing to me due to the different ( older ) volume pot. There are quite high voltages of 35V + so i'm not wanting to connect an external audio source into this. What is another way I could connect an external audio source into this? I have thought about switching to the anode on the pre-amp valve on the top of the chassis? Just thought I would check with the experts here as I don't want to ruin my radio or input source...
Thanks as always for any recommendations or advice.
Aaron

You will note that one of those old wet electrolytic caps is sitting on an insulator. That means that the set uses "back bias". That means you have to be very careful. If you hook up anything without DC isolation, you may destroy the bias and perhaps the ipod.

Normally the audio goes into the first AF valve and as none of the valves have diodes in them, the 6J7 is a "plate detector". There actually may be enough voltage swing from using transformers, to recombine stereo to mono and drive the 2A5 directly.

If there is 35V floating around, it is highly probable and was common early, for the volume pot to be in the cathode circuit of the mixer & 1st IF therefore totally out of the question.

Marc

Build or buy yourself an AM modulator.
Then you can run your own personal radio station with any input to all your radios within the household.
JJ

Thank you very much for the info and recommendation gents, very much appreciated. I had been thinking of building an A.M modulator. There are kits on eBay which seem very expensive for what they are but there are plenty of schematics available on Google so I’m looking forward to having a crack at making one.
Thanks so much again, have a happy Easter all.

Yes that design of radio does not lend itself to an audio input without extensive modification - which might improve the sound quality of the radio if done properly but you'd lose authenticity.

Silicon Chip magazine published an AM modulator kit about a year back.