This style of house is typical of some cities in the United States. A while back, a colleague posted a video and the street had several houses similar to these. When you mentioned the mysteries, I got excited. Have you ever stopped to imagine that this coin mystery could happen in your own home? Let's say you keep your relics under lock and key. One day, in history, they will be a treasure to be found.
About 10 years ago, a family found a box buried in a Brazilian house, full of money. There was momentary joy and sadness when they discovered it was worthless.
These things happen more often than we imagine; people tend to keep their treasures hidden and keep them to themselves.