I found $640: now what?

[Redd]

You had to tell someone you found it. But my play would have been to mention to the bank that I had found some money, held onto it myself, and given the bank teller my phone number. Then anyone who needed to claim it could call me, and if they knew how much was lost it could still be returned. But this way no crooked bank tellers can steal my stolen money.

I found $40 on the floor of a restaurant when I was about 7, righteously handed it in, and the waiter told me at the end of the meal that someone had claimed the money but had offered me a $5 reward. My family later figured out that the waiter had kept the other $35.