Decimal Day weights and measures.) Around the time of Decimalisation Day, "Decimal Adders" and other converters were available to help people convert between the old and new coins. The following is a table showing conversions between the decimal and pre-decimal systems. All pre-decimal coins (except for certain non-circulating coins such as crowns, sovereigns, and double florins which were explicitly excluded from demonetisation) are now no longer legal tender. Public outcry at the proposed demise of the old sixpence (6d), worth exactly p and originally slated for early withdrawal, postponed its withdrawal until June 1980. Shillings and florins, together with their same-sized 5p
Twenty pence (Irish coin) Twenty pence (Irish coin) The twenty pence (20p) () coin was a subdivision of the Irish pound. It was introduced on 30 October 1986. It was first Irish decimal coin that was of a different size to the corresponding British coin, as the Irish pound had not been pegged to the British pound since 1979. Its last issue was in 2000, two years before Ireland withdrew its pound for the euro. It features the horse (an Irish Hunter) that was on the pre-decimal half-crown coin, that was produced from 1928 to 1967. The coin has a yellow-brass colour due to