<Table> Three old pence <Tr> <Th> Value </Th> <Td> ​ ⁄ pound sterling </Td> </Tr> <Tr> <Th> Mass </Th> <Td> ( Silver ) 1.4 - 1.5 g ( Nickel - brass ) 6.8 g </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> ( Silver ) 16.20 mm ( Nickel - brass ) 21.0 -- 21.8 mm </Td> </Tr> <Tr> <Th> Thickness </Th> <Td> ( Nickel - brass ) 2.5 mm </Td> </Tr> <Tr> <Th> Edge </Th> <Td> Plain </Td> </Tr> <Tr> <Th> Composition </Th> <Td> ( 1816 -- 1919 ) 92.5 % Ag ( 1920 -- 1946 ) 50 % Ag ( 1947 -- 1970 ) Nickel - brass ( 79 % Cu , 20 % Zn , and 1 % Ni ) </Td> </Tr> <Tr> <Th> Years of minting </Th> <Td> 1547 -- 1970 </Td> </Tr> <Tr> <Th colspan="2"> Obverse </Th> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Profile of the monarch </Td> </Tr> <Tr> <Th colspan="2"> Reverse </Th> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Various </Td> </Tr> </Table>
<Table> Three old pence <Tr> <Th> Value </Th> <Td> ​ ⁄ pound sterling </Td> </Tr> <Tr> <Th> Mass </Th> <Td> ( Silver ) 1.4 - 1.5 g ( Nickel - brass ) 6.8 g </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> ( Silver ) 16.20 mm ( Nickel - brass ) 21.0 -- 21.8 mm </Td> </Tr> <Tr> <Th> Thickness </Th> <Td> ( Nickel - brass ) 2.5 mm </Td> </Tr> <Tr> <Th> Edge </Th> <Td> Plain </Td> </Tr> <Tr> <Th> Composition </Th> <Td> ( 1816 -- 1919 ) 92.5 % Ag ( 1920 -- 1946 ) 50 % Ag ( 1947 -- 1970 ) Nickel - brass ( 79 % Cu , 20 % Zn , and 1 % Ni ) </Td> </Tr> <Tr> <Th> Years of minting </Th> <Td> 1547 -- 1970 </Td> </Tr> <Tr> <Th colspan="2"> Obverse </Th> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Profile of the monarch </Td> </Tr> <Tr> <Th colspan="2"> Reverse </Th> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Design </Th> <Td> Various </Td> </Tr> </Table>
when did the silver threepenny piece go out of circulation
when did the silver threepenny piece go out of circulation
1970
1970