You know what they always say .... ask your buyer.
I wish i could offer more help.
The boards with the gold traces aren't common but they aren't uncommon either. It all seems to depend on what kind of stuff you're getting into. Some things are easy to classify. Things like cd/dvd boards, ram , hdd logic boards and so on. Other things are harder to classify.
I'm usually a little picky about what i ship so any board has to be mid grade or better.
I've got one box for mid grade with copper trace " needs sort ".
I've got another box for gold trace " needs sort ".
You might check out boardsort. They have a section on grading. Gold trace is probably covered in there somewhere.
Later edited to add:
I sent in a load recently just checked the payout report. If not mistaken ... the gold trace boards were classed as Mid-Grade High @ 2.10/lb
One thing you do want to check. There are some copper trace boards with gold solder pads. Those ones can fool you cause at a glance ... they appear to be gold trace. It's a good idea to scratch the green stuff off the actual traces somewhere and verify that it is what it appears to be.
As for value ???? ( JMO / YMMV)
I'm not seeing anything remarkably valuable there. It's basically gold leaf. If it had crazy scrap value it would have been horrendously expensive to make the board in the first place. The manufacturers would never go for that. Their engineers are trained to do things as cost effectively as possible.
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