Florida authorities have sounded the alarm over rep. eated instances of people trying to pass off blatantly counterfeit money, including movie prop bills, as legitimate currency — and flagging ways to tell which ones are fake.

The Monroe County Sheriff’s Office posted a picture of a crisp $100 bill with founding father Benjamin Franklin adorning the front like usual, but circled bolt markers that don’t appear on your average banknote.

“The $100 bills are marked as fake, stating they are to be used only in making motion pictures, but they may look accurate at a casual glance,” the office explained on Facebook .

While the fonts are similar to the standard used on real greenbacks, the labels very apparently spell out “FOR MOTION PICTURE PURPOSES,” “THIS IS NOT LEGAL TENDER,” and “PROP MO

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