Bank of England 10s note pence coin was introduced as a replacement for the ten-shilling note. The principal reason for the change was economy: the notes had an average lifetime of about five months whereas coins could last at least fifty years. The series C ten shilling notes ceased to be legal tender on 22 November 1970. In the Isle of Man, both the English and Manx Ten Shilling Notes continued to be legal tender for fifty new pence until 2013. Information taken from Bank of England website. Bank of England 10s note The Bank of England 10s note was a banknote of the pound
Bank of England £1 note with retailers and other groups it was announced on 31 July 1981 that the one pound note would be replaced by a one pound coin. Part of the reason for this change was that notes, on average, lasted only nine months in general circulation, while coins could last forty years or more. The government also believed that the growing vending industry would benefit from the introduction of a one-pound coin. The new cupro-nickel coin was introduced on 21 April 1983 and the one pound note ceased to be legal tender on 11 March 1988. Bank of England £1 notes are