I’m just curious which serial other users use to enter their bills
Just in case somebody enters his bills upside down
The upper right serial is the one that is black. The lower left serial is not completely black. If you take a closer look you will see it’s a bit colored. The best way to see this is to use broad daylight.
I checked only 5,10, 20 and 50 Euro bills, but I think this will also be the case with 100,200 and 500 Euro bills.



