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I just looked at my set with no fine tuning and channel 1 on the dial, it's chassis is Copper plated. It's serial# 23723 and it's a TS-4B or 4E can't quite make it out.
I have a bare chassis serial# 56000 something and it's a TS-4J, it has fine tuning.
I'm thinking yours is just a plain TS-4 with no suffix, just like it says on the label?
From your list above it looks like they were cranking out about 6000 of them a week in 1949!
Last edited by Eric H; 07-14-2011 at 08:43 PM.
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