Slider fucked up confusing mailboxes

One American unwittingly involved in some kind of scam. In his mailbox, he found a bundle, which turned out to be 13,007 dollars in cash and a loaded pistol with ammunition great destructive power.










Interestingly, the series of some denominations were one after the other, if only the grandmother came out of the printing press.











And I was tormented by the question: why top seven bucks?

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Source: www.turborotfl.com