<page_title> Penny (British pre-decimal coin) </page_title> <section_title> 20th century </section_title> <table> <cell> 1925–1943, 1945–1954 <col_header> Dates </col_header> </cell> <cell> Bronze (95.5% Cu, 3% Sn, 1.5% Zn) <col_header> Composition </col_header> </cell> <cell> 1944, 1961–1970 <col_header> Dates </col_header> </cell> <cell> Bronze (97% Cu, 0.5% Sn, 2.5% Zn) <col_header> Composition </col_header> </cell> </table>
The alloy for penny (British pre-decimal coin) was made with 97% copper, 0.5% tin, 2.5% zinc in 1944 and with 95.5% copper, 3% tin, 1.5% zinc in 1945.