2 boards,2 pictures, front and back. These are from old lab equipment. (1960's)
The boards are a strange in-between color brown and green. The pins on the front look gold coated and the traces on back look like the are also gold coated? It looks brighter than the pictures show.
I have no idea how to classify these.
Maybe someone out there has seen this.

Leaning low grade.

Not sure pins are enough to bump. Might be worth pulling them

_________________
Here to learn more so I can recycle more
My grades are my own opinion and not an official grade from Boardsort