The Coinage Act 1816 (56 Geo. 3. c. 68), also known as the Coin Act 1816 or Liverpool's Act,[1] defined the value of the pound sterling relative to gold. One troy pound of standard (22-carat) gold was defined as equivalent to £46 14s 6d.,[2] i.e. 44½ guineas, the guinea having been fixed in December 1717 at £1 1s exactly. According to its preamble, the purposes of the Act were to:
prohibit the use of silver coins (which would now be of reduced weight, 66 shillings rather than 62 shillings per troy pound), for transactions larger than 40s
establish a single gold standard for transactions of all sizes.[3]