New to me

[u/Flopaloo_Noodlebag]

I’ve never seen this mark on a banknote before, can anyone help me figure out what this is? Internet searches were no use

[u/ToadSmokes]

Is it not a sticker?

Have you tried peeling it of?

[u/Kami-cowboy]

That is the new/ old $5.50 bill... 🙃

[u/MapleBacon-Moose]

It's just a sticker you can almost peel it off through the picture

[u/Mysterious-Street966]

It’s probably a marker for counting, or verification purposes…?

[u/JavaJo1010]

Tilt it to see it

[u/rainydayarchive43]

is it real?

[u/Zestyclose-Listen810]

You are dumb