印尼盾
Riau, though part of Dutch and Indonesian territory, was economically under the influence of neighbouring Malaya. In order to affirm its fiscal stake in the region, a decree was passed on 15 October 1963 to replace the Malaya and British Borneo dollar (the circulating currency) with an Indonesian-issued currency, the Riau rupiah, which replaced the dollar at par. Although the rupiah resembled the Indonesian rupiah in appearance, it had a much higher value. Malayan money was withdrawn from 1 November 1963. The Riau rupiah was exchangeable as a foreign currency with the Indonesian rupiah.