Bleeding Ink In The Upper Right Serial Number

Personally I saved a few when I first noticed them, but after a bit, I realized how common that type of "error" really is and ended up keeping only a couple that just look interesting for a currency collection. Series 2013 has an abundance of that type. I see a lot of those heavy ink on the third digit and its a minor over inking error. Initially they were selling for a few dollars over face value to casual collectors say 2-3 bucks but generally the thought is that these should not have any value over face due to just how common they are, especially series 2013 where its very common. Its a good idea just to know what your collecting as you are asking now. Its a cool find different from the norm and I have always said if you like something and its only a dollar otherwise, keep it just dont get scammed by someone who tries to sell something common and minor as a big error worth lots of value.

Don't see a premium here.

Just in case there were any doubt it's a pattern...

Noticeably bold ones seem to be about 1 in 150, in the same ballpark as star notes, relatively common confirming @datadragon's comments.

The upper second digit of the 2017 and 2017-A also has a tendency to be darker, but neither as bold nor as frequent as the 2013. about 1-250. I'm working on getting a set.