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
Half crown (Irish coin) Half crown (Irish coin) The half crown (2s 6d) () coin was a subdivision of the pre-decimal Irish pound, worth of a pound. The half crown was commonly called "two and six" due to its value of two shillings and sixpence (indicated on the coin itself as '2s 6d'). The original minting of the coin from 1928 to 1943 contained 75% silver, a higher content than the equivalent British coin. The silver coins were quite distinguishable as they had a whiter appearance than the later cupronickel variety minted from 1951. The silver coins wore less well. The subsequent cupronickel coin