Hi and welcome to Beoworld !
There are two types of Beomaster 1600.
The value of your Beomaster depends greatly on which type you have and even more on the condition.
- Is it working ?
- Was it recently serviced ?
- Optical flaws, scratches, dents, parts missing ?
- Is the original box and/or manuals included ?
And still with all these questions answered it's very difficult to tell you the value.
Generally, things are worth what people are ready to pay.
Keeping an eye on f.e. Ebay listings could give a hint but even here there are good and bad days for buyers and sellers.
Martin