Does anyone know about 70s vortex tape decks?

[amadantreun]

I have a few I got from my dads stuff when he died. From what I can I tell they've never been used they're still in plastic bags. Wondering if they're worth anything?

 

[Spitfire95]

I have a few I got from my dads stuff when he died. From what I can I tell they've never been used they're still in plastic bags. Wondering if they're worth anything?

Sorry for late answer, but I just stumbled upon this post because I was researching this type of casette deck. I found one in my Tandberg tr220gc. It's probably a module that Tandberg ordered from vortex to put in the tr220gc and tr220c models. There is a vortex logo on the bottom left corner of the module. Hopefully this helps you by finding at least one use case.