1938-1948 All Half Pennies in this period were as follows.
Diameter 25.5 mm
Weight 5.67 grams
Edge – Plain
Bronze composition: 97% copper, 2.5% zinc and 0.5% tin.
Obverse: Has a portrait of King George VI by Thomas H. Paget
Reverse: The sculpted kangaroo designed by George Kruger Gray
The Australian Halfpenny was a coin used in the Commonwealth of Australia prior to decimalisation. The coin was first minted in 1911 and stopped being minted in 1964, excluding 1937, 1956 – 1958 inclusive. When the Australian currency was decimalised on 14 February 1966 the coin was equal to 5⁄12¢.
There were in total 6 variites of Half Pennies minted between 1911 and 1966 when decimalisation occured.