50 Sen - Agong

Malaysia's first post-independence coinage series launched in 1967, replacing the Malaya and British Borneo dollar at par — a politically significant transition that unified the currencies of Peninsular Malaysia, Sabah, and Sarawak under a single national identity for the first time. The series ran for over two decades with minimal modification, an unusually long production life that reflects the Razak and Mahathir governments' deliberate monetary conservatism during a period of rapid industrialization.

The type was eventually replaced in 1989 when Bank Negara introduced a reduced-size series, partly in response to vending machine industry pressure and rising metal costs relative to face value.