This is Cody's long awaited work on the signed coin in Sweet-N-Low packet! 
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Very easy to do
Step by step instructions
Volunteer can remove coin from packet
Completely examinable
You end absolutely clean
Cody will even share with you how to logically present this in venues where no Sweet-N-Low is available
BONUS: As a special bonus, Cody shares his ABSOLUTE FAVORITE card to sealed envelope secret