First pic: Boardsort doesn't buy silver mylars. You can sell those on ebay, I guess. Second pic: those small boards from printer cartridges are peripheral due to the gold plating. Third pic: will be gold tip connectors.
**I have always wondered if you remove the gold finger from the ribbon wire in the center of the third picture, if that would be considered a clean gold finger even if the gold plating isn't as think as it is on a gold finger card there is not much fiber making it a similar gold-fiber ratio as a clean gold finger**
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