Coins of the pound sterling chronologically. All genuine UK coins are produced by the Royal Mint. The same coinage is used across the United Kingdom: unlike banknotes, local issues of coins are not produced for different parts of the UK. The pound coin until 2016 was produced in regional designs, but these circulate equally in all parts of the UK (see UK designs, below). Every year, newly minted coins are checked for size, weight, and composition at a Trial of the Pyx. Essentially the same procedure has been used since the 13th century. Assaying is now done by the Worshipful Company of Goldsmiths on behalf
Coins of the Canadian dollar to the $1 and $2 coins as well. The 50¢ piece is regularly minted, but not in large quantities; it is very rare to come across this coin in circulation, although an unsuccessful attempt was made by the Mint to promote the use of the coin when a special edition was released in 2002 marking the 50th anniversary of Elizabeth II ascending the throne. Coins issued in 2002 do not have the usual mint date, which normally appears on the reverse side. Instead, the 2002 coins have a commemorative double-date on the obverse side: "1952-2002", to commemorate the 50th anniversary