<Table> Dollar coin <Tr> <Td_colspan="2"> United States </Td> </Tr> <Tr> <Th> Value </Th> <Td> 1.00 U.S. dollar </Td> </Tr> <Tr> <Th> Mass </Th> <Td> 8.100 (2000 -) g (0.260 troy oz) </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> 26.5 mm (1.043 in) </Td> </Tr> <Tr> <Th> Thickness </Th> <Td> 2.00 mm (0.079 in) </Td> </Tr> <Tr> <Th> Edge </Th> <Td> Plain with incised inscriptions </Td> </Tr> <Tr> <Th> Composition </Th> <Td> Copper with manganese brass clad (copper 88.5%, zinc 6%, manganese 3.5%, nickel 2%) </Td> </Tr> <Tr> <Th> Years of minting </Th> <Td> 1794--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> Profile of Sacagawea with her child, Jean Baptiste Charbonneau </Td> </Tr> <Tr> <Th> Designer </Th> <Td> Glenna Goodacre </Td> </Tr> <Tr> <Th> Design date </Th> <Td> 2000 (modified 2009) </Td> </Tr> <Tr> <Th_colspan="2"> Reverse </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Images with contributions made by Native American tribes and individual Native Americans to the history of the United States </Td> </Tr> <Tr> <Th> Designer </Th> <Td> Various </Td> </Tr> </Table> <Tr> <Td_colspan="2"> United States </Td> </Tr> <Tr> <Th> Value </Th> <Td> 1.00 U.S. dollar </Td> </Tr> <Tr> <Th> Mass </Th> <Td> 8.100 (2000 -) g (0.260 troy oz) </Td> </Tr>

When was the last pure silver dollar minted