In 1863 copper 1/4, 1/2 and 1 Cent coins bearing the portrait of Sir James Brooke were struck by the Ralph Heaton & Sons Mint in Birmingham, England. The dies for this coinage as well as the later copper coinage of 1870 were engraved by Joseph Moore.
Coinage bearing the portrait of the second white Rajah, Sir Charles Johnson Brooke, in copper bearing the denomination 1/4, 1/2 and 1 Cent were issued at various dates between 1870 to 1897.
All the coins of Sarawak from 1863 to 1941 were minted at the Ralph Heaton & Sons Mint in Birmingham (known as The Mint Birmingham Limited after 1879). However, the "H" mint mark on the coinage of Sarawak was only introduced in 1889.
The Encyclopaedia of the Coins of Malaysia, Singapore and Brunei, 1400-1967 lists a 1863 pattern with size of 19 mm in diameter and mass of 2.4 grammes, whereas regular coins were 18 mm and 2.33 gr (36 grains, in the measurement units of the time). | 
