Circulation (currency) in the context of "Bland–Allison Act"

A gold coin is a coin that is made mostly or entirely of gold. Most gold coins minted since 1800 are 900–920 ‰ gold (22‑karat), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Buffalo. Alloyed gold coins, like the American Gold Eagle and South African Krugerrand, are typically 917 ‰ gold by weight, with the remainder being silver and copper.

Until about the 1930s, gold coins were circulation coins, including coin-like bracteates and dinars. Since then, gold coins have mainly been produced as bullion coins for investors and as commemorative coins for collectors. While modern gold coins are still legal tender, they are not used in everyday financial transactions, as the metal value invariably exceeds the nominal value. For example, the quarter-ounce American Gold Eagle has a denomination of $10, but a metal value of approximately $500 (as of January 2024).

The United States ten-dollar bill (US$10) is a denomination of U.S. currency. The obverse of the bill features the portrait of Alexander Hamilton, who served as the first U.S. secretary of the treasury, two renditions of the torch of the Statue of Liberty (Liberty Enlightening the World), and the words "We the People" from the original engrossed preamble of the United States Constitution. The reverse features the U.S. Treasury Building. All $10 bills issued today are Federal Reserve Notes.

As of December 2018, the average life of a $10 bill in circulation is 5.3 years before it is replaced due to wear. Ten-dollar bills are delivered by Federal Reserve Banks bound with yellow straps.

In macroeconomics, money supply (or money stock) refers to the total volume of money held by the public at a particular point in time. There are several ways to define "money", but standard measures usually include currency in circulation (i.e. physical cash) and demand deposits (depositors' easily accessed assets on the books of financial institutions). Money supply data is recorded and published, usually by the national statistical agency or the central bank of the country. Empirical money supply measures are usually named M1, M2, M3, etc., according to how wide a definition of money they embrace. The precise definitions vary from country to country, in part depending on national financial institutional traditions.

Even for narrow aggregates like M1, by far the largest part of the money supply consists of deposits in commercial banks, whereas currency (banknotes and coins) issued by central banks only makes up a small part of the total money supply in modern economies. The public's demand for currency and bank deposits and commercial banks' supply of loans are consequently important determinants of money supply changes. As these decisions are influenced by central banks' monetary policy, not least their setting of interest rates, the money supply is ultimately determined by complex interactions between non-banks, commercial banks and central banks.

The United States one-hundred-dollar bill (US$100) is a denomination of United States currency. The first United States Note with this value was issued in 1862 and the Federal Reserve Note version was first produced in 1914. Inventor and U.S. Founding Father Benjamin Franklin has been featured on the obverse of the bill since 1914, which now also contains stylized images of the Declaration of Independence, a quill pen, the Syng inkwell, and the Liberty Bell. The reverse depicts Independence Hall in Philadelphia, which it has featured since 1928.

The $100 bill is the largest denomination that has been printed and circulated since July 13, 1969, when the larger denominations of $500, $1,000, $5,000, and $10,000 were retired. As of December 2018, the average life of a $100 bill in circulation is 22.9 years before it is replaced due to wear.

The United States one-dollar bill (US$1), sometimes referred to as a single, has been the lowest value denomination of United States paper currency since the discontinuation of U.S. fractional currency notes in 1876. An image of the first U.S. president (1789–1797), George Washington, based on the Athenaeum Portrait, a 1796 painting by Gilbert Stuart, is currently featured on the obverse, and the Great Seal of the United States is featured on the reverse. The one-dollar bill has the oldest overall design of all U.S. currency currently in use. The reverse design of the present dollar debuted in 1935, and the obverse in 1963 when it was first issued as a Federal Reserve Note (previously, one-dollar bills were Silver Certificates). The current US two-dollar bill has the oldest obverse design, dating from 1928.

A dollar bill is composed of 25% linen and 75% cotton. That blend makes the notes more difficult to counterfeit compared to paper (as well as increasing its durability). As of December 31, 2018, the average life of a dollar bill in circulation is 6.6 years before it is replaced due to wear. Approximately 42% of all U.S. currency produced in 2009 were one-dollar bills. As of December 31, 2019, there were 12.7 billion one-dollar bills in circulation worldwide. An engraver at the US Bureau of Engraving and Printing, George Frederick Cumming Smillie, made an etching of a painting of George Washington by Gilbert Stuart which was used on multiple banknotes. A vignette of the portrait appears on the one dollar bill of 1899, and on notes since 1918.