From the 1980 Olympics, a metal medallion honoring contributors to the USA team. Medallion measures 2.5" x 2" and weighs 3.1 ounces. It has some surface wear on the front and back, and on edges.
Type of metal is unknown, might be brass. The plastic storage case has been damaged (missing chips of plastic on two sides). Total weight (case and medallion) is 4.1 ounces.
Shipment by US Postal Service 1st Class mail.