<Tr> <Th> Steel Alloy </Th> <Th> Copper </Th> <Th_colspan="2"> Copper Alloy </Th> <Th> Silver Alloy </Th> <Th> Silver </Th> <Th_colspan="2"> Gold </Th> <Th> Platinum </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td_colspan="2"> </Td> <Td> </Td> <Td> </Td> <Td_colspan="2"> </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td_colspan="2"> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

Is a silver dollar bigger than a half dollar