Decimal Day
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Decimal Day was Monday 15 February 1971, when the United Kingdom and Ireland decimalised their £sd currencies of pounds, shillings, and pence.
An introductory pack of the new currency
British decimalisation training stamps in the same colours and values as the upcoming decimal stamps
A "Decimal Adder"
Along with a few other non-circulating coins, sovereigns (including half, double and quintuple sovereigns) survived decimalisation, and remain legal tender to date, though they have far greater worth as bullion coins and as numismatic collectibles than their face value.
Pound sterling
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Sterling is the currency of the United Kingdom and nine of its dependent territories and formerly of the Kingdom of England. The pound is the base unit of sterling, and the word pound is also used to
Decimal Day
…Decimal Day (Irish: Lá Deachúil) was Monday 15 February 1971, when the United Kingdom and Ireland decimalised their £sd currencies of pounds, shillings, and pence. Until then, the British pound sterling (£) and the Irish pound (£) were divided into 20 shillings, each of 12 (old) pence, for…
Penny of William I, showing the king's head between two stars
King Offa penny (eighth century)
Penny of Henry III, 13th century
Edward III noble (80 pence), 1354–55