updated 3/12/05

DENOM	YEAR/S	COMPOSITION	GRAM/ GRAIN	SIZE MM
HALF CENT	1793	COPPER	6.74/104	22
HALF CENT	1794	COPPER	6.74/104	23.5
HALF CENT	1795	COPPER	5.44/84	23.5
HALF CENT	1840	COPPER	5.44/84	23
LARGE CENT	1793	COPPER	13.48/208	26-27
LARGE CENT	1793	COPPER	13.48/208	26-28
LARGE CENT	1793-1795	COPPER	13.48/208	29
LARGE CENT	1795-1814	COPPER	10.89/168	29
LARGE CENT	1816	COPPER	10.89/168	28-29
LARGE CENT	1837	COPPER	10.89/168	27.5
SMALL CENT	1856	.880 COPPER/.120 NICKEL	4.67/72	19
SMALL CENT	1864	.950 COPPER/.050 TIN & ZINC	3.11/48	19
SMALL CENT	1943	STEEL CORE/ZINC PLATED	2.7/41.67	19
SMALL CENT	1944-1946	.950 COPPER/.050 ZINC	3.11/48	19
SMALL CENT	1947-1982	.950 COPPER/.050 TIN & ZINC	3.11/48	19
SMALL CENT	1982-	.992 ZINC & .008 COPPER CORE	2.5	19
DENOM	YEAR/S	COMPOSITION	GRAM/ GRAIN	SIZE MM
TWO CENT	1864-1873	.950 COPPER/.050 TIN & ZINC	6.22/96	23
SILVER 3 CENT	1851-1853	.750 SILVER/.250 COPPER	0.8/12.35	14
SILVER 3 CENT	1854-1873	.900 SILVER/.100 COPPER	0.75/11.57	14
NICKEL 3 CENT	1865-1889	.750 COPPER/.250 NICKEL	1.94/30	17.9
5 CENT	1866	.750 COPPER/.250 NICKEL	5/77.16	20.5
6 CENT	1883	.750 COPPER/.250 NICKEL	5/77.16	21.2
7 CENT	1942-1945	.560COPPER/.350 SILVER/.090 MAGANESE	5/77.16	21.2
8 CENT	1946-	.750 COPPER/.250 NICKEL	5/77.16	21.2
HALF DIME	1794	.8924 SILVER/.1076 COPPER	1.35/20.8	16.5
HALF DIME	1837	.900 SILVER/.100 COPPER	1.34/2068	15.5
HALF DIME	1853	.900 SILVER/.100 COPPER	1.24/19.1	15.5
DIME	1796	.8924 SILVER/.1076 COPPER	2.7/3.87	19
DIME	1809	.8924 SILVER/.1076 COPPER	2.7/3.87	18.8
DIME	1828-1837	.8924 SILVER/.1076 COPPER	2.7/3.87	18.5
DIME	1837	.900 SILVER/.100 COPPER	2.67/41.2	17.9
DIME	1853	.900 SILVER/.100 COPPER	2.49/38.4	17.9
DIME	1873-1964	.900 SILVER/.100 COPPER	2.5/38.6	17.9
DIME	1965-	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	2.27/35	17.9
DENOM	YEAR/S	COMPOSITION	GRAM/ GRAIN	SIZE MM
TWENTY CENT	1875-1878	.900 SILVER/.100 COPPER	5/77.16	22
QUARTER	1796	.8924 SILVER/.1076 COPPER	6.74/104	27.5
QUARTER	1831-1838	.8924 SILVER/.1076 COPPER	6.74/104	24.3
QUARTER	1838	.900 SILVER/.100 COPPER	6.68/103	24.3
QUARTER	1853-1873	.900 SILVER/.100 COPPER	6.22/96	24.3
QUARTER	1873-1964	.900 SILVER/.100 COPPER	6.25/102	24.3
QUARTER	1965-1974	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	5.67/87.5	24.3
QUARTER	1976	CORE-.209 SILVER & .791 COPPER OUTER LAYERS-.800 SILVER & .200 COPPER	5.75/88.7	24.3
QUARTER	1977-	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	5.67/87.5	24.3
HALF DOLLAR	1794	.8924 SILVER/.1076 COPPER	13.48/208	32.5
HALF DOLLAR	1836-1839	.900 SILVER/.100 COPPER	13.36/206	30
HALF DOLLAR	1839	.900 SILVER/.100 COPPER	13.36/206	30.6
HALF DOLLAR	1853-1873	.900 SILVER/.100 COPPER	12.44/192	30.6
HALF DOLLAR	1873-1964	.900 SILVER/.100 COPPER	12.5/193	30.6
HALF DOLLAR	1965-1970	CORE-.209 SILVER & .791 COPPER OUTER LAYERS-.800 SILVER & .200 COPPER	11.5/177.5	30.6
HALF DOLLAR	1971-1974	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	11.34/175	30.6
HALF DOLLAR	1976	CORE-.209 SILVER & .791 COPPER OUTER LAYERS-.800 SILVER & .200 COPPER	11.5/177.5	30.6
HALF DOLLAR	1977-	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	11.34	30.6
DENOM	YEAR/S	COMPOSITION	GRAM/ GRAIN	SIZE MM
DOLLAR	1795	.8924 SILVER/.1076 COPPER	26.96/107.4	39-40
DOLLAR	1840	.900 SILVER/.100 COPPER	26.73/412.5	38.1
DOLLAR	1873-1885	.900 SILVER/.100 COPPER	27.22/420	38.1
DOLLAR	1878-1935	.900 SILVER/.100 COPPER	26.73/412.5	38.1
DOLLAR	1971-1976	CORE-.209 SILVER & .791 COPPER OUTER LAYERS-.800 SILVER & .200 COPPER	24.59/379.5	38.1
DOLLAR	1977-1978	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	22.68/350	38.1
DOLLAR	1979-1999	COPPER CORE OUTER LAYERS-.750 COPPER/.250 NICKEL	8.1/126	26.5
DOLLAR	2000-	COPPER CORE OUTER LAYERS- .770 COPPER/.120 ZINC/.070 MAGANESE .040 NICKEL	8.1/126	26.5