I have never seen one of these before and I can't find any reference to this TV online. Although this example was bought in the UK I have a feeling that something very similar might have been sold in the USA.

This example is UHF only and for UK/European 220V/240V power. It has a compartment for internal batteries. The photo shows a cover for the screen. The power cord is unlike any I've seen before and must be very rare.

Does it ring any bells?

DING! DING! In the U.S. its' a Panasonic TR-449B, BA or BC. Service info in sams folder 1128-2. All the best, Tom

Thanks, Tom.

The Sams data isn't very common in the UK. Any chance of a scan?