British pre-decimal coins

These are Britain's pre-decimal coins which could be used in the twentieth century. Some are still legal tender today, although I doubt they would turn up in anyone's loose change.

Coin	Monach/Year first minted	Materials	Year demonitorised	Oldest legal tender issue when withdrawn
Farthing (¼d)	Edward I (1272-1307)(*)	Silver, copper, bronze (from 1860)	1 January 1961	1860
Halfpenny (½d)	Edward I (1272-1307)(*)	Silver, copper, bronze (from 1860)	1 August 1969	1860
Penny (1d)	Offa of Mercia c760	Silver, copper, bronze (from 1860)	1 September 1971	1860
Threepence (3d)	Edward VI 1551	Silver, brass (from 1937)	Brass - 1 September 1971; silver still legal tender value (3p) (**)	1834 (silver) 1937(brass)
Groat (4d)	Edward I (1272-1307)	Silver	Still legal tender value 4p, but not in regular circulation in the twentieth century(**)	1836
Sixpence (6d)	Edward VI 1551	Silver, cupronickel	1 July 1980	1816
Shilling (12d)	Henry VII 1489	Silver, cupronickel	1 January 1990	1816
Two shillings (florin) (2s)	Victoria 1849	Silver, cupronickel	1 July 1993	1849
Halfcrown (2s 6d)	Henry VIII 1526 (gold), Edward VI 1551 (silver)	Gold, silver, cupronickel	1 January 1970	1816
Double florin (4s)	Victoria 1887	Silver, cupronickel	Still legal tender, but not in regular circulation	1887
Crown (5s or 25p)	Henry VIII 1526 (gold), Edward VI 1551 (silver)	Silver, cupronickel	Still legal tender, but only used for commemorative issues	1818
Half sovereign	Henry VIII 1544	Gold	Still legal tender, but rarely used after 1914	1838
Sovereign	Henry VII 1489	Gold	Still legal tender, but rarely used after 1914	1838

(*) Earlier examples have been found, but it is believed that this were trial or experimental issues. The first successful farthing and halfpenny issues were in the reign of Edward I.

(**) Groats and silver threepence coins are still legal tender and were re-valued upwards as they are indistinguishable from Maundy coins of the same value. So a groat worth 4d increased in value to 4p in 1971.