How to Know Fake 100 US Dollar Bills

In a world where counterfeit currency is a growing concern, being able to identify fake 100 US dollar bills is crucial. This guide will take you through a series of steps to help you spot counterfeit bills with accuracy. Understanding these methods can not only save you from being deceived but also help you contribute to combating financial fraud.

1. Examine the Bill’s Texture

Real US dollar bills are made from a unique blend of cotton and linen, giving them a distinct texture. Run your fingers over the bill. Genuine currency feels slightly rough and crisp, while counterfeit bills might feel smoother or different. This is one of the easiest ways to spot a fake if you know what to look for.

2. Check the Watermark

Hold the bill up to the light. You should see a watermark of Benjamin Franklin's portrait on the right side of the bill. This watermark is visible on both the front and back of the bill. Counterfeit bills often lack this watermark or have a poorly reproduced one.

3. Look for the Security Thread

Genuine $100 bills have a security thread running vertically to the left of the portrait. This thread is embedded in the bill and should be visible when held up to the light. The thread is imprinted with the text "USA 100" and changes color when moved. Fake bills may have a printed security thread that doesn't change color or is poorly aligned.

4. Inspect the Color-Shifting Ink

The number "100" in the lower right corner of the front of the bill is printed with color-shifting ink. When you tilt the bill, the color of this ink should shift from green to black. Counterfeit bills might not have this feature or it might not shift colors properly.

5. Use a UV Light

When placed under ultraviolet (UV) light, genuine $100 bills will reveal a security thread that glows pink. This thread is embedded in the paper and can only be seen under UV light. Counterfeit bills may not have this feature or might have a thread that glows in the wrong color.

6. Verify the Microprinting

Microprinting is a security feature that involves tiny text printed in various places on the bill. On the $100 bill, you should be able to see tiny text under magnification in the security thread and around Benjamin Franklin's portrait. Fake bills often lack this detail or have blurry microprinting.

7. Examine the Printing Quality

Genuine bills are printed using sophisticated techniques that include multiple layers of ink and intricate patterns. If you notice any smudging, blurry text, or inconsistent coloring, the bill might be fake. High-quality counterfeit bills may still exhibit printing flaws when examined closely.

8. Test with a Pen

Special counterfeit detection pens use iodine-based ink that reacts with the starch in paper. Genuine currency is made from a cotton-linen blend and will not react with the pen. Counterfeit bills, often printed on regular paper, will turn dark if the pen detects starch.

9. Compare with a Known Genuine Bill

When in doubt, compare the suspicious bill with a known genuine $100 bill. Pay attention to the color, texture, and specific security features. Any discrepancies might indicate a counterfeit.

10. Seek Professional Verification

If you're still unsure about the authenticity of the bill, seek help from a professional or use specialized counterfeit detection tools. Banks and other financial institutions can also assist in verifying the authenticity of your currency.

Understanding and applying these techniques can significantly reduce the risk of accepting counterfeit bills. Always be vigilant and educate yourself on the latest security features to stay ahead of counterfeiters.