The U.S. Capitol Building Pin is die struck from jewelers metal, enamel color filled, gold plated and polished to a great shine. This great pin features the U.S. Capitol Building in the forefront of our American Flag! The Capitol building is home to our U.S. Government's Legislative Branch - the U.S. Congress, including the House of Representatives and the Senate. Each pin comes with a standard clutch back is individually poly bagged.