i should warn people, DO NOT TRY TO MAKE THESE AND PASS THEM OFF AS BITCOIN CURRENCY.
it is a federal crime to do so because it looks like federal reserve notes.
This is very true and cannot be emphasized enough. The picture that the OP posted looks very much like the dollar bill and only after looking at it closely can you see that it is not a dollar bill.
we know its criminal and dont endorse it.. but hyperthetically. imagine you owned a 7-11 shop, a customer comes in and gives you a bunch of bills to pay for an $11 item....
you notice right away one of the bills is a bitcoin.. not a dollar.. would you call the cops and let them confiscate the bitcoin. or smile proudly, keep it yourself and put one of your own dollar bills into the cash register to ensure the register stays in-float.
i know id keep the $620 mistake (not recommending your employees do it. but as a manager of the imaginary 7-11 id be smiling)