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blacklight

  1. Geoff

    Black Lights and Magnetism - A Long History (and what I discovered)

    My wife and I spent a LOT of time tonight at DLR, running around with a magnet and a black light since these "new" methods of telling fakes and scrappers are under scrutiny, and I wanted to see for myself. I'll divide the two and tell you what we found. This is long - read it only if you have...
    • Geoff
    • Thread
    • blacklight fake magnet scrapper test
    • Replies: 31
    • Forum: Pin Comparison
  2. C

    How reliable is a blacklight at detecting scrappers?

    Hi all, first post. My wife and I have been pin trading for about a year and we have about 700 pins, all from park trading and park purchases. We accidentally discovered that all purchased pins respond to UV light (blacklight). It might be as little as a character's tongue or as much as the...
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