The Italian police ... arrested eight people on charges related to the seizure of $6 trillion in fake United States Treasury bonds, in a mysterious scheme that stretched from Hong Kong to Switzerland to the southern Italian region of Basilicata. The value of the seized bonds is in the neighborhood of half of the United States' entire public debt of $15.36 trillion, but only the uninitiated would have accepted them as real securities. Rather than counterfeit, they were what officials call fictitious, printed in 6,000 units of $1 billion each, a denomination that does not exist and the equivalent of $3 bills. The United States Embassy in Rome said its experts had examined the bonds, which bore the date 1934, and determined that they were fictitious and apparently part of a scheme intended to defraud Swiss banks. According to the Federal Reserve, such fictitious instrument fraud" is increasingly common, and unwitting investors have been cheated of nearly $10 billion in recent years. In a common ploy, "criminals present fictitious financial instruments such as Federal Reserve notes, standby letters of credit, prime bank guarantees or prime bank notes in order to fraudulently collateralize loans," the Federal Reserve says on its Web site. In 2009, Italian police seized phony United States Treasury bonds with a face value of $250 billion.