Meaning of exonumia

ex•o•nu•mi•a

Pronunciation: (ek"su-n'mē-u, -ny'-), [key]
— n.pl.
  1. items, as tokens or medals, that resemble money but are not intended to circulate as money.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.