What to say… really very rare chance to get NOS complete board F-3016 for Sansui receiver TA-500!!
Shiny and clean, like it is right now from Sansui factory! Look at the pictures!
That board include protection circuit, tone control circuit, selector circuit, driver circuit and power stage! All new, never connected to the voltage source!
Here it is the list what rare electronic elements you would get as new with this board:
-    2SK129 diff FET x 2 pcs
-    Protector IC HA12002 x 1 piece
-    Driver IC AN7070 x 2 pcs
-    Sanken power transistors 2SA1103 – 2 SC2578  x 2 pairs
-    Speakers selector switch x 1 piece
-    Protection relay x 1 piece
-    Potentiometers x 2 pcs
-    Switches x 2 pcs

Just those parts above worth more than EUR 200 if you buy them on ebay separately! Some of them you cannot buy as new!

But, again, I would repeat, that board is untested, and it should be installed by technician.