The Happy Man (1955)

A man finds a wallet in a taxicab with a lot of money in it. He turns it in to the police, who--according to the law--will hold it for 90 days, and if no one claims it, the wallet and its content will be given to the person who found it. However, when his friends and neighbors find out that he turned in the wallet, they ridicule him mercilessly, and he begins to wonder if he did the right thing or not.