The pre-decimal threepence (3d), usually simply known as a threepence or threepenny bit, was a unit of currency equalling one eightieth of a pound sterling, or three pence sterling. It was used in the United Kingdom, and earlier in Great Britain and England.
Coins of the same size and virtually the same design (but with proof-like finish) have been issued regularly since 1817 and continue to be released every year as part of Maundy sets; these are listed separately under Maundy Threepence in the NCLT section; apart from the surface quality, they are indistinguishable.
Threepence coins issued during the reign of King George III differ from the later issues in that part of the monarch's legend is transferred to the reverse.
The composition is Sterling Silver (0.925 silver) and the coins have 0.0420 oz ASW (ounce of Absolute Silver Weight). | 
