SMALL PRINT ON THE 10 DOLLAR BILL
If one looks closely on the Ten Dollar ($10) bill two places have very small print not usually seen by the naked eye. Look at the name HAMILITON under his likeness on the face side of the bill. Just above his name is written "THE UNITED STATES OF AMERICA TEN DOLLARS". You may need a magnifying glass or other help to see it. Now look at the vertical borders printed on the bill. Also vertical on the inside of the border you will find this: "THE UNITED STATES OF AMERICA TEN DOLLARS USA."
It is very interesting to investsigate our currency.
SMALL PRINT ON THE TWENTY DOLLAR BILL
Looking at a twenty (20) dollar bill find the number "20" to the left of Jackson's shoulder. Between the zero (0) of the 20 and his right shoulder is found the printing: "THE UNITED STATES OF AMERICA 20 USA 20 USA." You may need help in reading it. This was on a 2009 series of the Federal Reserve Note.
SMALL PRINT ON A HUNDRED (100) BILL
Next time you see a 100 dollar bill look at the number 100 to the left of Franklin's likeness. The numerals that make up the 1, 0 and 0 are filled with small print repeating "USA 100". This was found on a series 1996 Federal Reserve Note. Interesting what you can see when looking closely at things.