i recently came into about 100 lbs of these .but i have never seen them before and done know how to grade them .
basicly there clean .i think there called unpopulated.there red and green and all they have is like the gold/silver colored curcuitry and solder points.
any ideas
they look kinda like this .but i have all diferant kinds and sizes
Unpopulated KK+ Boards - FLYTRON
thanks