Circulating United States currency currently includes six denominations of United States coinage (or even mintage): $0.01, Zero.05, $0.Decade, $0.Xxv, $0.Fifty & $1.00. A lot come by a United States Mint, which sells them to the United States Federal Reserve Banks, who come responsible putting coins into circulation & withdrawing the children from either circulation, every bit demanded per economy.

Coins currently in circulation

Note:
†: A perched Bald Eagle number one appreared inside quarters in 1932. tons the same, all coins
minted anterior 1965 were flushed from either circulation due to their silver content.

‡: Within 1975 and 1976 bicentennial coinage was minted. Coins were dated 1776-1976.
a quarter featured a Colonial Drummer, the half dollar Independence Hall, and a
dollar coin featured a Liberty Bell superimposed on the Moon. Bullion coins
Independent articles: American Gold Eagle, American Platinum Eagle, American Silver Eagle

Non-circulating bullion coins are besides by a United States Mint. A face value one coins is symbolical & doesn't actually reflect a value of the precious metal contained inside these coins. American Silver Eagle
$1, a single troy ounce (~31 grams) silver American Gold Eagle
$5, tenth troy ounce (~3 grams) gold $10, quarter troy ounce (~7.Octonary grams) gold $25, half troy ounce (~15.Fivesome grams) gold $50, 1 troy ounce (~31 grams) gold

American Platinum Eagle
$10, tenth troy ounce (~3 grams) platinum $25, quarter troy ounce (~7.Eight grams) platinum $50, half troy ounce (~15.Quintet grams) platinum $100, 1 troy ounce (~31 grams) platinum

Note: Unity troy ounce = 31.1034768 grams.

Obsolete denominations
Half cent Two-cent piece Three-cent piece (silver and nickel varieties) Half dime Twenty-cent piece Gold 1 dollar coin Two-&-1-half dollar coin or even "quarter-eagle" Three-dollar coin Four-dollar coin or "stella" (not circulated) Five-dollar coin or even "half-eagle" Ten-dollar coin or even "eagle" Twenty-dollar coin or even "double eagle" Fifty-dollar coin or even "Half Union" (Comemorative only, California territorial gold, pattern piece)

Note: These are the most common misconception that "eagle"-depending terminology for gold U.S. coinage was simply slang. This is non a out break. A "eagle," "half-eagle" & "quarter-eagle" were specifically given these list in the Coinage Act of 1792. Also, a double eagle was specifically created per se by title ("An Act to authorize the Coinage of Gold Dollars and Double Eagles", title & subdivision Ace, March Three, 1849).