For the last 15 years, at least $77 million in sophisticated counterfeit $100 bills have flooded into the country from Israel.

According to a court affidavit, the bills had many of the security features designed to thwart counterfeiting, including watermarks and a security thread. They were printed on high-quality offset presses.

Criminals would pay about 40% of the face value of the bills for a "10 stack," or $10,000 worth of the bills, and then pass the notes at everything from local CVS drugstores to car washes to Lowe's home improvement stores. Most of the bills were circulated along the Interstate-95 corridor in the East.money.cnn

http://money.cnn.com/2014/08/12/news/economy/counterfeit-100-dollar-bills/