what year did the sixpenny piece cease to be legal tender
The 25 Pence Crown was discontinued and the title Crown applied to the Five Pound coin from 1990, with Crowns being minted in most years since. The decimal 25 Pence and Five Pound Crowns are not intended to be circulating coins but are legal tender never the less. Series C featuring Queen Elizabeth II (140 x 85mm) - First issued 1963, Last issued 1971, ceased to be legal tender 31-Aug-1973.   Series D featuring Queen Elizabeth II (145 x 78mm) - First issued 1971, Last issued 1990, ceased to be legal tender 29-Nov-1991.