Not that we ever see many of them around here—but in the interest of science—here is the low down on the Benjamin because the hundred-dollar bill just got a makeover and made its big debut.Fun fact: The $100 is the second most common bill in circulation, behind only the $1 bill according to  Yahoo Finances.

The new design incorporates security features that make it easier to authenticate, but harder to replicate," says Federal Reserve Board Governor Jerome H. Powell. "As the new note transitions into daily transactions, the user-friendly security features will allow the public to more easily verify its authenticity."

Here's everything you need to know about the bill:

1. It's been a long time coming. The redesign for the new $100, the first for the bill since 1996, has been in development for a decade. It was set to roll out more than two years ago, but was delayed due to issues with creasing and smeared ink.

2. Benjamin Franklin isn't going anywhere. Franklin wasn't cut from the new design, his face is still featured on the front of the bill. Twice! "Hold the note to light and look for a faint image of Benjamin Franklin in the blank space to the right of the portrait."

3. The 3-D Security Ribbon: The most notable change is probably the broken, blue strip down the front of the bill. The ribbon is woven into the bill's paper too, not printed on it, and if you "tilt the note back and forth while focusing on the blue ribbon, you will see the bells change to 100s as they move."  The 3-D security ribbon is magic. It is made up of hundreds of thousands of micro-lenses in each note making it the most complex note the United States has ever produced.

4. The Security Strip: That blue ribbon is part of a pair: If you hold the note to the light, there is another embedded thread on the other side of the Benjamin Franklin portrait that reads "USA" and "100." If you hold the bill up to ultraviolet light, this tread glows pink.

5. The Bell in the Inkwell: The other bold additions to the front of the bill are a feathered quill and a copper inkwell. "Tilt the note to see the color-shifting bell in the copper inkwell change from copper to green."

6. All Gold Everything: This is a $100 bill we're talking about, after all. Let's make it fancy! The gold "100" on the front of the note, like the inkwell, shifts from cooper to green. Meanwhile, a giant "100" has been added to the back, to "help those with visual impairments distinguish the denomination."

7. It doesn't just look different, it feels different. "Move your finger up and down Benjamin Franklin's shoulder on the left side of the note. It should feel rough to the touch, a result of the enhanced intaglio printing process used to create the image. Traditional raised printing can be felt throughout the $100 note, and gives genuine U.S. currency its distinctive texture.


Mark Wilson/Getty Images

8. You may not see the new $100 for a while. At least, not in person. "It may take some time before you see a new design $100 in circulation," Sonja Danburg, the program manager for the U.S. Currency Education Program explains, noting that the demand and distance from the Fed. Bank will affect when they make their way to your local bank.