Can You Solve This Pi Day Riddle? [UPDATE: Answer Revealed]

In celebration of the mathematical constant pi, earlier today we published this riddle. Besides being Pi Day, March 14th also marks an important day in financial history. Can you crack the code to discover what it is? See the answer below:

 

ANSWER:

Gold Standard Act signed into US law

How to solve:

The Atbash cipher is a very common, simple cipher. It was for the Hebrew alphabet, but modified here to work with the English alphabet. Basically, when encoded, an "A" becomes a "Z", "B" turns into "Y", etc.