"Commemorative coins" are special coins designed to remember or honor important people, events, or themes. They are not used for regular transactions but are kept as souvenirs or collectibles. Full definition
The US mint also produces a variety of commemorative coins, some of which are minted in gold and silver. (money.stackexchange.com)
As the Packers were playing the Seahawks that Monday night, Hochuli was in the living room of his Phoenix home, its curio cabinets filled with ceramic zebras («People give me zebras»), gold Super Bowl whistles («We don't actually use those») and silver commemorative coins from a lifetime of coin flips. (si.com)
Supervisor Howard T. Phillips, Jr. and the Haverstraw Town Board congratulated the students on their winning entry and presented them with Certificates of Excellence and Haverstraw 400th Anniversary Commemorative coins for their first Place «Haverstraw Landslide» project. (rocklandtimes.com)