Silver In Circuit Boards

I've been working through several old computer and industrial machinery (late 70's early 80's). I've noticed the paths on the circuit board are much much larger than what I normally see - between a quarter and a third of an inch wide, and they are on top of the board. Several of these appear to be silver. Now I have a pound or two of boards with nothing of signifigant value except the silver on them. Some have small resistors or a few small capacitors, but for the most part these are empty boards. I will check with my normal buyer (EWasted), but I wanted to see if anyone had any experience with these. Am I correct this is likely silver plating on the old boards? Are they anything better than low grade for anyone?

That is silver solder not silver plate. Some buyers will pay a little better than low grade for them. Boards from the 50's and 60's have even more silver than those.

Its a Tin/Lead solder. The tracks (traces) are thicker & different because they were done by hand. By sticking different stickers & tape on the prefab board, then copying them using a Xerox sorta machine.

These days its all laser printed & really really accurate.

very interesting! I'll send Mariovan email and see if these are even worth shipping. I'm guessing not.

It's purty looking board tho(far right, blue one)!

I'd give you .50 cents for the green paper one all the way to the left.

Sirscrapalot - Fredo!

With that many years aging, if it's silver it would be tarnished.