numismatics
noun
nu·mis·mat·ics
ˌnü-məz-ˈma-tiks
-məs-,
ˌnyü-
plural in form but singular in construction
: the study or collection of coins, tokens, and paper money and sometimes related objects (such as medals)
An area of numismatics that has increased in popularity and value is paper money.—Quoc Nguyen
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Merriam-Webster unabridged
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