Valuation of a Blaupunkt Stuttgart Cass/Radio

[littleoldman]

I bought a car with an extra radio as the PO upgraded to a CDR2 (I guess he didn't have cassettes).
Anyway - it is in great working order and is pristine. It has a remanufactured sticker so I know it is in working order.

blaupunkt Stuttgart 964.645 102x PCNA Remanufactured

I wonder if there is a value range you could suggest that is fair to all parties.

Thanks