“That odd man Buttons may be made fun of for his weird, hobby and obsession. But one of his magic buttons could save your life one day”.
During big fights in the arena or gladitorial ring between two well known or important warriors. When one looses and dies, the crowd throws copper coins into the arena for the slain warrior to take with them on their passage of death. This is to make their passage and afterlife richer and less troubled. It is a sign of respect.