Until Feb. 15, 1971, Britain had 240 pennies to a pound. There were also two farthings in a ha'penny, three pennies in a bit, two shillings in a florin, and five shillings in a crown.

On 15 February 1971 - Decimal Day - the British currency system finally switched over from the old £sd system of pounds, shillings and pence to the current decimal system. The change, however ...