The Hidden Harbor Mystery (Hardy Boys, #14)

by Franklin W. Dixon

“Money!” Chet whooped. “Millions!” Mr. Blackstone and Professor Rand both reached for the bag. “Mine!” they cried together. Suddenly an odd expression crossed Frank’s face. He held up one of the packages of bills. “Confederate States of America,” he read slowly. A stunned silence followed. Wordlessly, Frank and Joe removed the stacks of worthless Civil War bills.

This made me chuckle