A lot of people are fascinated by the history, sentiment and artwork that surrounds coins.  They vary in size, shape and design since art-lovers enjoy painting on coins.  However, they are not the only ones who enjoy tinkering with coins. Scientists also enjoy tinkering with coins’ material because it is so tough and long-lasting.  Children also love hearing the ringing sound that coins make whenever they collide with one another in their piggy banks.  So, it is no wonder that so many people enjoy collecting coins.