A MODERN So-Called dollar is a medal that commemorates a public or special event, a famous person, or a famous place. Some examples include world's fairs, town or state centennials, statue dedications, and other events or historical figures in the United States. They measure between 33 and 45 mm in diameter. Our guide starts from 1963 to present. Because of the vast number of medals we are asking everyone to add content to our project.