3. The $1 Bill Design Hasn't Changed Since 1963
The $1 bill design has remained unchanged since 1963. The main reason is that the $1 bill is infrequently counterfeited. In addition to counterfeiting, there's also a legislativereason. Section 116 of the Financial Services and General Government Appropriations Act prohibits spending money to redesign the $1 note.

6. It's Not Made of Paper
We might call it paper money, but it's not actually paper. In fact, currency paper in the U.S. is 75 percent cotton and 25 percent linen, according to the Department of theTreasury.

14. The Latin Around the Pyramid Speaks to American Exceptionalism
"Annuit Coeptis," which is written above the pyramid, means "Providence Has Favored Our Undertakings." Below the pyramid, the words "Novus ordo seclorum" mean "A New Order of theAges," which refers to the United States' historic form of government.

18. You Can Tell Which Federal Reserve Bank Issued It
On your dollar bill, there are serial numbers with two letters and eight numbers. The first letter - which will be between A and L - indicates which bank issued the bill. Theletters stand for:

26. You Can Buy Uncut Sheets of $1 Bills
The general public is allowed to buy uncut sheets of currency from the Bureau of Engraving and Printing. You can order by phone or on the bureau's website.

To read the complete article, see:
30 hidden secrets of the $1 bill(https://www.msn.com/en-us/money/markets/30-hidden-secrets-of-the-dollar1-bill/ss-AAyIBS0?li=BBnb7Kz&ocid=HPDHP17)