PinMart United States of America Congress Seal Lapel Pin Available as a single item or bulk packed. Select your quantity above. Qty: 1 pin United States of America Congress Seal Pin. Die struck from jewelers metal, enamel color filled, gold plated and epoxy coated. Members of the United States Congressional Team, Senate and U.S. military branches all have a seal to identify their group. SIZE: 1" Each pin comes with a clutch back and is individually poly bagged.