The Hidden Security Code in Every $100 Bill (Most People Miss It)

At PennyVerse.info, we’re dedicated to helping you protect your money from counterfeits. While most people check for the security strip or pen test, there’s a little-known alphabet code hidden in every genuine $100 bill—and counterfeiters often get it wrong.

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Let’s break down how to spot this secret feature and verify your cash with confidence.


How to Find the Federal Reserve Indicator

  1. Locate the Black Federal Reserve Seal (left side of the bill).
  2. Spot the Tiny Letter & Number near the seal (e.g., “E5” or “B2”).

What It Means:

  • The Letter = The Federal Reserve Bank that issued the bill.
  • The Number = Must match the letter’s position in the alphabet.

✅ Example of a Real Bill:

  • “E5”
    • E = 5th letter → Issued by the Richmond Federal Reserve.

❌ Example of a Fake Bill:

  • “Z1”
    • Z = 26th letter (should be “Z26”) → Instant red flag!

Federal Reserve Code Cheat Sheet

LetterNumberFederal Reserve Bank
A1Boston
B2New York
C3Philadelphia
D4Cleveland
E5Richmond
F6Atlanta
G7Chicago
H8St. Louis
I9Minneapolis
J10Kansas City
K11Dallas
L12San Francisco

Full $100 Bill Security Checklist

For maximum protection, combine this test with other security features:

✔ Color-Shifting Ink – The “100” changes from copper to green.
✔ Security Thread – Glows “USA 100” under UV light.
✔ Watermark Portrait – Visible when held to light.
✔ 3D Security Ribbon – Blue ribbon with moving bells & “100s.”
✔ Raised Printing – Feel the texture on Franklin’s shoulder.
✔ Microprinting – “USA100” along the golden quill.


Why This Trick Catches Counterfeiters

🔹 Most fakes ignore or mess up this detail.
🔹 Requires precise knowledge of the Federal Reserve system.
🔹 Hard to replicate accurately with home printing.
🔹 Takes just seconds to check!


What to Do If You Get a Fake Bill

🚨 Don’t return it to the passer.
🚨 Limit handling to preserve evidence.
🚨 Note details (where/when received).
🚨 Report to:


Pro Tips for Spotting Fakes

🔸 Newer bills (2017+) have enhanced security.
🔸 Older designs are still legal but easier to fake.
🔸 International bills may have different features.
🔸 Always check multiple security elements—never rely on just one!


Join Our Counterfeit Detection Community

At PennyVerse.info, you’ll get:
🔎 Free weekly security updates
🔎 High-res comparison images
🔎 Latest scam alerts
🔎 Live Q&A with experts

Stay vigilant, and keep your money safe! 💵✨


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