The half penny coin was minted in bronze. It was the smallest decimal coin by both size and value, weighing 1.78 grams and measuring 17.14 millimetres in diameter.
The half penny coin was last minted for circulation in 1983. In 1984 the denomination was only issued in Mint and Proof Sets and in December 1984 the coin was demonetised, as inflation had rendered it an anachronism.
See also: Penny, Half, Coinage, Obverse, Circulation
 
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