a 5 cent stamp of Ben Franklin in red-brown inkDefinitives are U.S. 1st Class stamps printed in large quantities. They are sold for an indefinite period of time, usually until there is a change in the 1st Class postage rate.


a 1 cent blue stamp of Christopher Columbus seeing land for the first time. Commemoratives are US 1st Class stamps that celebrate an event, a person or a national treasure. They are printed in much smaller quantities and sold for a limited time. This is one of the first U.S. commemorative stamps. It was issued to celebrate Christopher Columbus and the 1893 World’s Columbian Exposition (also known as the Chicago World’s Fair).