Hello fellow collectors! I have another question about a dollar bill I found. It is a series 2013 and the serial numbers caught my eye. The serial number on the top right of the bill is far darker than the serial number on the bottom left. I believe this may be called an "overinking" error. The top right serial number is so bold that you can see it on the reverse of the bill to the top left of the "O" in "ONE." Is this something that is normal / happens fairly frequently? Is this a keeper? Thanks
I think I see darker serial number in the upper right. This is either slightly over inking of the upper right serial number or under inking of the lower left serial number. Who knows for sure? I think the reason you see it on the back of the bill has to do more with the fact that the serial numbers are not intaglio printed, they are stamped on the bill. Too much printing pressure can make this effect. If you find a nice new crisp bill you can feel the serial numbers with your fingers.
Under inking (or insufficient inking) can make for some really odd looking bills. Here is one with an under inked bank seal. And here is one with an insufficiently inked second (face) printing. And finally one with an insufficiently inked first printing.
Could have been a wiper blade problem. The wiper blade crosses over the printing cylinder to remove excess ink and as it dulls, it can create over/under inking. That the simplest explanation I can think of.
