Not all armour works as it should do, and these thirty suits of armour all have something wrong with them. (Until I can get it fixed somehow, only the main page link to this submission is working.)
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.