[Bob Andersen]

Wild ballpark guestimate $300 - $600. I sold a fully restored one with a good replacement picture tube for $1,000 a few years ago.

It's hard to say without more detail. There are some unique parts to a Tandem that are very hard to replace. Most notably:

The 25 foot long cable and connector. Are there any cracks in the insulation ? Is the center HV plug intact ? They tend to crack loose.

Is the picture tube good ?

Is the antenna intact ?

Are all the knobs there ?

Is it mahogany or the less common blonde?

Is the faux wood grain finish in good condition ? Or is it one of the rare early examples with real veneer ?