Decimal Day use pennies or threepenny pieces, to pay them in multiples of 6d (p, the lowest common multiple of the two systems). Bus companies (at that time many state-owned by the National Bus Company) were another exception, going decimal on Sunday 21 February. Decimal Day itself went smoothly. Criticisms included the small size of the new halfpenny coin and the fact that some traders had taken advantage of the transition to raise prices. Some used new pennies as sixpences in vending machines. After 15 February, shops continued to accept payment in old coins, but always issued change in new coins. The
Coins of the pound sterling one-pound coin, depicts the entire shield of arms on the reverse. All current coins carry a Latin inscription whose full form is , meaning "Elizabeth II, by the grace of God, Queen and Defender of the Faith". In addition to the circulating coinage, the UK also mints commemorative decimal coins (crowns) in the denomination of five pounds. Prior to decimalisation, the denomination of special commemorative coins was five shillings, that is, of a pound. Crowns, therefore, had a face value of 25p from decimalisation until 1981, when the last 25p crown was struck. Ceremonial Maundy money and bullion coinage of