Cards Marking of Invisible Ink
19/07/2022 Others
Price: Check with seller
Description
At the beginning, people invented invisible ink pen to mark cards. They make any marks only they know on the back of the playing cards, to indicate the cards value. At this time, the effect of this invisible ink is better than the lemon juice, but is still not stable enough. The hidden marks is too strong that easy to reveal, or too light to see clearly.
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Mohit Kumar
Individual
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