Welcome to Beoworld !
Definitely a Beomaster 1001 (as would also be readable on the top surface) and I agree it's worth fixing.
Is it white or light oak ?
The part that is taped to the top is the front part of the large slider.
It should have three little fingerwheels and two nylon slider parts (these are often found stuck in dust in the
groove in which they normally travel).
Martin