Why do people put pennies on the top of grave stones?

People place pennies on grave stones as a sign of respect and remembrance for the deceased. A penny left on a grave indicates that someone has visited the site, while its value can symbolize that the visitor acknowledges the person's life. Traditionally, different coins convey varying messages: a penny for a visit, a nickel for a friendship, and a quarter for being present at the time of death. This practice reflects a personal connection and honors the memory of those who have passed away.