Michael Gallagher, risk-management director at Enterprise Bank in Lowell, said a woman brought the bill to the bank Tuesday morning and employees were immediately suspicious, the Lowell (Mass.) Sun reported Wednesday.
"It is really unlikely we would see one in Lowell," he said. "It raised red flags very quickly. It was an easy catch."
Gallagher, who said he could not disclose what type of transaction the woman was attempting to make with the bill, said $10,000 bills have not been printed since 1934 and haven't been in wide circulation since the close of the 1930s. He said only about 300 of the bills are thought to still exist, mostly in the hands of collectors.
Police said the investigation is ongoing and no charges have yet been filed.