Have you ever noticed strange symbols on your U.S. dollar bills? Some show small stamps, initials, or even tiny shapes like a bow and arrow. People call these chop marks. They are evidence of a bill’s journey through foreign markets and money exchanges.

Chop marks are small stamps applied by currency handlers or money changers. They signal that a bill has been inspected and verified as authentic. These marks are especially common in Southeast Asia, Africa, and Latin America, where counterfeit bills are more frequent.

The term “chop” comes from China, which has long stamped silver coins to prove authenticity and weight. Over time, merchants extended the practice to paper money. The U.S. dollar, widely circulated outside the United States, became a popular candidate for chop marking.

S. law prohibits mutilating currency to the point it loses value. Chop marks don’t reach that level. They don’t reduce the bill’s worth or affect its function. However, heavily marked bills may be rejected by some machines or banks due to appearance.