Very rare NOS (Never Used) Sansui Rear Channel Power Block Board F-1391 for Quad Amplifier QR-500, ONE PIECE!
I have two pieces of that board, but the price is for ONE piece (when you buy it, please let me know which board you are buying, "A" or "B" board). The boards are in great condition, never installed, but it is untested, and it has some scratches on it. What you see you will get it. Those boards are from 1973, so as you can see, they are in very good condition for that age.
The boards was never connected to the power supply, and they are untested. Board "B" has one electrolytic capacitor missing (C839), but it is good to change all electrolytic capacitors, because they are very old and probably dried.