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
Coins of the pound sterling and have ceased to be legal tender. <nowiki>* The specifications and dates of 5p, 10p, and 50p coins refer to the larger sizes issued in 1968 and 1969 respectively. † The specification refers to the round coin issued from 1983–2016. Although obsolete, this coin is still redeemable at banks and still legal tender on the Isle of Man.</nowiki> All modern British coins feature a profile of the current monarch's head on the obverse. There has been only one monarch since decimalisation, Queen Elizabeth II, so her head appears on all decimal coins, facing to the right (see also Monarch's head,