Don't rely on the anti-counterfeiting pen to tell you if a note is genuine; it's only iodine that reacts to the starch in paper. A genuine note that's been through the wash might cause a black mark, and a counterfeit printed on high-quality paper might cause the yellow mark.
Here's a site to learn how to distinguish real from fake: http://www.secretservice.gov/know_your_money.shtml
I check the watermark and run a fingernail over the portrait. The ink is raised, so your fingernail hits each line and it's like ^^^^^ rather than -------.
Here's a site to learn how to distinguish real from fake: http://www.secretservice.gov/know_your_money.shtml
I check the watermark and run a fingernail over the portrait. The ink is raised, so your fingernail hits each line and it's like ^^^^^ rather than -------.
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