United States Mint coin sizes - wikipedia United States Mint coin sizes Main article : Coins of the United States dollar This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( December 2006 ) The United States Mint has minted over 20 different kinds of coins, of many different sizes. Often, it is difficult for people to get a grasp of what much of the historical coinage looked like, at least in relation to modern circulating coins. This chart shows all of the coin types, and their sizes, grouped by coins of similar size and by general composition. Seven distinct types of coin composition have been utilized over the past 200 years : three base coin alloys, two silver alloys, gold, and in recent years, platinum. The base metal coins were generally alloys of copper ( for 2 cent coins and lower ), and copper / nickel ( for 3 and 5 cent coins ). Copper / nickel composition is also used for all modern `` silver '' coins. US Coin Sizes and Composition Steel Alloy Copper Copper Alloy Silver Alloy Silver Gold Platinum Three Cent 14 mm 0.8 g 0.750 fine 1851 -- 1853 14 mm 0.75 g 0.900 fine 1854 -- 1873 Half Dime 15.5 mm 1.24 g 1794 -- 1873 Dollar 15 mm 1.67 gr 1849 -- 1889 $5 AGE Bullion 16.5 mm 3.11 g 1986 -- present $10 APE Bullion 16.5 mm 3.11 g 1997 -- present Three Cent 17.9 mm 1.94 g 1865 - 1889 Dime ( Clad ) 17.91 mm 2.268 g 1965 -- present Dime 17.9 mm 2.5 g 1796 -- 1964 $2.50 Gold Quarter Eagle 18 mm 4.2 g 1796 -- 1929 Small Cent 19.05 mm 2.5 g 1943 Small Cent 19.05 mm 3.11 g 1864 - 1982 Small Cent 19.05 mm 4.67 g 1856 - 1864 2.5 g 1982 -- present Three Dollar 20.5 mm 5.01 g 1853 -- 1876 Nickel 21.21 mm 5 g 1866 -- present Nickel 21.21 mm 5 g 1942 -- 1945 Twenty Cent 22 mm 5 g 1875 -- 1878 $5 Half Eagle 21.6 mm 8.36 g 1795 -- 1929 $10 AGE Bullion 22 mm 7.78 g 1986 -- present $25 APE Bullion 22 mm 7.78 g 1997 -- present Half Cent 23.5 mm 6.74 g 1795 -- 1857 Two Cent 23 mm 6.22 g 1864 - 1873 Quarter ( Clad ) 24.26 mm 5.67 g 1965 -- present Quarter ( 40 % Ag ) 24.3 mm 5.75 g 1976 ( S ) Quarter 24.3 mm 6.25 g 1796 -- 1964 Dollar 26.5 mm 8.1 g 1979 -- Present $10 Eagle 27 mm 17.5 g 1795 -- 1933 $25 AGE Bullion 27 mm 17.5 g 1986 -- present $50 APE Bullion 27 mm 15.6 g 1997 -- present Large Cent 29 mm 10.89 g 1793 -- 1857 Half Dollar ( Clad ) 30.61 mm 11.34 g 1971 -- present Half Dollar ( 40 % Ag ) 30.6 mm 11.5 g 1965 -- 1970, 1976 ( S ) Half Dollar 30.6 mm 12.5 g 1796 -- 1964 $50 Bullion 32.7 mm 31.1 g 1986 -- present $100 APE Bullion 32.7 mm 31.1 g 1997 -- present $20 Double Eagle 34 mm 35 g 1849 -- 1933 Dollar ( Clad ) 38.1 mm 22.68 g 1971 -- 1978 Dollar ( 40 % Ag ) 38.1 mm 24.59 g 1971 ( S ) - 1976 ( S ) Dollar 38.1 mm 26.73 g 1794 -- 1964 $1 ASE Bullion 40.6 mm 31.1 g 1986 -- present Representative images of US coin sizes Steel Alloy Copper Copper Alloy Silver Alloy Silver Gold Platinum Notes on the tables : Images are close to actual size on a 92 - dpi monitor. Clad Half Dollars, Silver Half Dollars and Dollars, and Gold Half Eagles and Eagles are still regularly minted as commemorative coins. Dimes, quarters and half dollars are also struck in 90 % silver for special annual collector 's sets. The silver - colored Susan B. Anthony dollar was replaced with gold - colored Sacagawea Dollar in 2000 and Presidential Dollars 2007 - 2016 ; though the composition changed, the coin 's size and weight remain the same. Some variances in coin size and weight occurred over time, especially as the value of silver varied. In particular, many silver coins changed in the 1870s. The figures cited in the tables are representative of the series, and are generally the latest, or most common, figures for a given coin type. The largest coin ever minted by the US Mint was a gold `` Half Union '' pattern in 1877, weighing 83.45 grams, and 51.1 mm in diameter. The largest coin actually issued by the mint was the Panama - Pacific Exposition $50 gold commemorative, at 83.572 grams and 44 mm. An octagonal version of the coin was slightly larger, measuring 45 mm at its widest point. Jump up ^ `` The United States Mint : Frequently Asked Questions ''. Retrieved 24 March 2010. Jump up ^ `` Coin Composition, Federal Reserve Bank of Atlanta ''. Jump up ^ Native American $1 Coin United States currency and coinage Topics Federal Reserve System Federal Reserve Note U.S. dollar U.S. Mint Philadelphia San Francisco Denver West Point Bureau of Engraving and Printing Mutilated currency Current coinage Penny ( 1 ¢ ) Nickel ( 5 ¢ ) Dime ( 10 ¢ ) Quarter ( 25 ¢ ) Half dollar ( 50 ¢ ) Dollar ( $1 ) Bullion coinage America the Beautiful Silver Bullion Coins American Buffalo American Gold Eagle American Platinum Eagle American Silver Eagle American Palladium Eagle Current paper money $1 $2 $5 $10 $20 $50 $100 See also Bicentennial coinage Commemoratives Early Commemoratives Modern Commemoratives Confederate dollar Large denominations Obsolete denominations Promotional fake denominations Counterfeit United States currency Mill Coin production In God We Trust E pluribus unum Annuit cœptis Nicknames Replacement banknote Sales tax token Obsolete United States currency and coinage Topics United States coinage United States dollar History of the United States dollar Coins Half cent ( 1793 -- 1857 ) Fugio Cent ( 1787 ) Large cent ( 1793 -- 1857 ; 1868 ) Two - cent piece ( 1836 ; 1864 -- 73 ) Three - cent nickel ( 1865 -- 89 ) Three - cent silver ( 1851 -- 73 ) Half dime ( 1792 -- 1873 ) Twenty - cent piece ( 1875 -- 78 ) Gold coins Gold dollar ( 1849 -- 89 ) Quarter eagle ( 1796 -- 1929 ) Three - dollar piece ( 1854 -- 89 ) Half eagle ( 1795 -- 1929 ) Eagle ( 1795 -- 1933 ) Double eagle ( 1850 -- 1933 ) Half - union ( 1877, 1915 ) Patterns Two - cent billon ( 1836 ) Three - cent bronze ( 1863 ) Stella ( 1879 -- 80 ) Currency Discontinued denominations Fractional currency Large denominations of currency Discontinued currency types Early American currency Compound interest treasury note Demand Note Federal Reserve Bank Note Gold certificate Interest bearing note National Bank Note National gold bank note Refunding Certificate Silver certificate Treasury or Coin Note Treasury Note ( 19th century ) United States Note United States postal notes Retrieved from `` https://en.wikipedia.org/w/index.php?title=United_States_Mint_coin_sizes&oldid=842679724 '' Categories : Coins of the United States Hidden categories : Articles needing additional references from December 2006 All articles needing additional references Talk About Wikipedia Add links This page was last edited on 23 May 2018, at 23 : 53 ( UTC ). 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Question: what is the largest coin in the us
Answer: $1 ASE Bullion