In the study of
numismatics,
tokens are coin-like objects used instead of
coins. The field of tokens is part of
exonumia. Tokens are used in place of coins and either have a denomination shown or implied by size, color or shape. "Tokens" are often made of cheaper metals:
copper,
pewter,
aluminium,
brass and
tin were commonly used, while
bakelite,
leather,
porcelain, and other less durable materials are also known.