Commemorative /(?)/

Com·mem·o·ra·tive

Commemorative

a.
  1. Tending or intended to commemorate; as, a commemorative plaque.
    An inscription commemorative of his victory.
    — Sir G. C. Lewis.

Commemorative

n.
  1. something that commemorates, especially a postage stamp or coin having a design commemorating some event, person, institution, etc.