The answer is, because it is artificially limited in quantity, so that it does not pass the point of saturation in the field of its use. Its value rests on its monetary use; it is fiduciary money, not commodity money. It is limited simply by letting "the needs of the people" determine its amount. This is done by issuing it only in exchange for other money of the larger denominations, and by redeeming it in other money on demand. Fractional coins are issued on the request of banks in exchange for standard money. One needing "change" gets it at the bank; when the bank finds its supply falling short it gets more from the government mints. As business increased in 1898, the demand for nickels, dimes, and quarters became unprecedented, and the mints worked night and day to supply them. If these coins were made in great quantities and forced into circulation by the government through paying them out to creditors and officials, their quantity would become excessive and they would fall in value (be at a discount) compared with standard money. But as this is not done, and as, moreover, they are redeemed on demand at the treasury (and practically at every bank and post office) in other money, any slight tendency to depreciation in any locality is at once corrected. As it is, the government makes a seigniorage profit on the fiduciary coinage, as shown in the following table. [5] The fractional coinage is maintained at a parity with the standard money in accordance with the monopoly principle, expressed in the limitation of the amount. _Receipts:_ Earnings (charges for refining, assaying, manufacture for other countries, etc.)......................... $392,000 Bullion recovered, by-products, old materials, etc... 143,000 Profits on seigniorage, subsidiary silver............ 3,013,000 Profits on seigniorage minor coinage and recoinage... 2,387,000 ---------- Total receipts.......................................$5,935,000 _Expenditures_: All kinds............................................$1,138,000 ---------- Net revenues from mint service.....................$4,797,000 § 5. #Worn coins and Gresham's law.# Coins may be light-weight as the result of another cause--namely, the abrasion (wearing off) of the coins in circulation. Nearly always when this has occurred the worn coins have still been accepted as money,[6] and ordinarily without any depreciation. That is to say, they have a value as money greater than the value of the bullion that is in them. Everybody takes them without hesitation as readily as if they were full weight. If, however, at this point, new full-weight coins are put into circulation, these at once disappear while the old ones remain in circulation--a fact that has always been somewhat mystifying.