<Table> Cent <Tr> <Td_colspan="2"> United States </Td> </Tr> <Tr> <Th> Value </Th> <Td> 0.01 U.S. Dollars </Td> </Tr> <Tr> <Th> Mass </Th> <Td> 2.5 g (0.080 troy oz) </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> 19 mm (0.750 in) </Td> </Tr> <Tr> <Th> Thickness </Th> <Td> 1.52 mm (0.0598 in) </Td> </Tr> <Tr> <Th> Edge </Th> <Td> Plain </Td> </Tr> <Tr> <Th> Composition </Th> <Td> 1982--present copper - plated zinc 97.5% Zn, 2.5% Cu </Td> </Tr> <Tr> <Th> Years of minting </Th> <Td> 1793--present </Td> </Tr> <Tr> <Th> Catalog number </Th> <Td>--</Td> </Tr> <Tr> <Th_colspan="2"> Obverse </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Abraham Lincoln </Td> </Tr> <Tr> <Th> Designer </Th> <Td> Victor D. Brenner </Td> </Tr> <Tr> <Th> Design date </Th> <Td> 1909 </Td> </Tr> <Tr> <Th_colspan="2"> Reverse </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Union Shield </Td> </Tr> <Tr> <Th> Designer </Th> <Td> Lyndall Bass </Td> </Tr> <Tr> <Th> Design date </Th> <Td> 2010--present </Td> </Tr> </Table> <Tr> <Td_colspan="2"> United States </Td> </Tr>

When did the us stop making solid copper pennies