Vintage Stereo System Appraisal

I am trying to locate an appropriate appraiser and some sites I can list a recently found a vintage stereo system that I would like to sell.

It's an HH Scott Stereomaster system. The components are a 222 Stereo Amplifier, a 314 Wide Band FM Receiver and a 335 Wideband Mutiplex Adaptor. I'm unclear if this was a kit or was sold as a whole unit because it's contained in a wooden cabinet with a 12 inch coil speaker.

I have ALL of the manuals, schematics and miscellaneous stuff. I also have pictures of the unit as well.