token coin
補助貨幣 / token-coin — Institutions
A small coin for paying odd amounts.
10 Kreuzer Silver Coin (1864)1864
The face value is higher than the intrinsic value of the material. ⚠ As this invites counterfeiting, it became standard practice to legally establish a "limit on the amount usable in a single transaction." Subsidiary coinage was the first form of money supported by the system rather than by its material content.