Unity 1 Rotary Platform

I have a turntable called Unity 1 Rotary Platform, in big white letters
It has a Grace F9E tone arm
The table is solid brass and weighs 15 lbs, it is drilled for balance, finely machined and has damping material around the spindle  
It stand on 3 rubber suspended legs
The dust cover is not hinged, so it must be set aside when playing records
It only plays 33 1/3 rpm
I believe it was made in Germany and hasa Linn motor
Does anyone have any info, history and an approx value
I currently run a Sota Sapphire , with a Sumiko arm and Grado platinum V2 cartridge

thanks Robert