Very early Motorola VT71 scored

[Eric H]

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!