What Grade board do we have here?

[Mechanic688]

Either way, size doesn't matter in this case...some old cards are HUGE (10-12" and some larger)

I agree as it had to be that big for the parts they had to use, large capacitors, 26 transistors instad of 1 or 2 IC chips, and larger resistors.
There was no micro parts back then. Definitely old school.

but unless the tracing is GOLD and not a varnish like other mentioned, I am not sure most buyers would buy it as finger board.

Looks to be same color, texture so I'd guess gold across the board.