20 Ringgit - Postal Order - Johore

Postal orders occupy an awkward position in notaphily — technically instruments of payment rather than banknotes, yet collected alongside them. Pos Malaysia's ringgit-denominated postal orders were issued for domestic remittance use, allowing senders without bank accounts to transfer fixed sums through the post office network. The 20 Ringgit value sat at the higher end of the standard postal order range, used more often for business transactions than personal correspondence.

A serial number as the sole recorded security feature reflects the modest fraud risk associated with postal orders, which required counter-stamping at the paying post office to be encashed — the physical stamp was the real control mechanism.