It's completely undetectable! It's so close to the same weight as a newer (not silver) half dollar
you'd have to put it on a scale to tell for sure. It looks just like a coin you don't have to switch
it, I don't. I use M5 to flip it over in peoples hands, as a Hold Out in my back pocket, I'll leave
it in my sleeve to vanish or switch small metal items (safety pins, paper clips). Multi uses out of
this thing!
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