That creepy eye on the back of the dollar bill, explained

You've seen it a million times without really looking at it. What is that doing there?

RARE PAPER MONEY ERRORS - VALUABLE DOLLAR BILLS AND BANK NOTES CURRENCY

Why do we no longer use $1,000 bills? - Marketplace

Why are there so few $2 bills? - Marketplace

When was the last time a $1000 bill was printed? - Quora

When was the last time a $1000 bill was printed? - Quora

That creepy eye on the back of the dollar bill, explained - Marketplace

The eye on the dollar bill - OCL VIsion

Why do we no longer use $1,000 bills? - Marketplace

dollar bill Archives - Marketplace

Found in grandmas stuff : r/papermoney, Stuff Under 1 Dollar

That creepy eye on the back of the dollar bill, explained - Marketplace

The eye on the dollar bill - OCL VIsion

The eye on the dollar bill - OCL VIsion

Why do we no longer use $1,000 bills? - Marketplace

That creepy eye on the back of the dollar bill, explained - Marketplace