I found this $100 bill Series 2013 that has a blue Power Button Symbol under the # 100 on bottom right. How much can this error be worth? (See Pictures)
It’s a Chopmark and not any kind of BEP error. The blue stamp “appears” to be under the gold lettering because the blue ink doesn’t stick to the gold lettering but does stick to the paper. You can read more about Chopmarks here - https://www.coinbooks.org/esylum_v17n07a21.html
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