Hey, these are a nice throwback to a simpler time (when all I needed was a roll of quarters for the arcade)... That said, a lot of industrial boards from this era did one specific application (voltage delimiter, relays, etc..) which is nice, but means that not everything is "valuable" from a scrap perspective, as I'm sure you have surmised. Aside from the clock and sequencer boards (probably the exception you mentioned) which might go low telco through Boardsort, the rest are eh. This is a question for Chris, he might give you a deal given the age of the boards and their potential value, but that is for him to decide. If you want to save some time and effort, if you have a coin or jewelry shop nearby, ask if they have an XRF setup, and then ask if they would be willing to zap some of those traces to verify the silver (probable if they are from '83). As far as the connectors go, not sure they would qualify the boards for the gold finger rate, considering they are not your typical "gold finger", but again, a question for Chris.
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