Selangor: Sungei Buloh Settlement $1 1936 s/n. 000739 (KNB4) PMG 45 NET, Rust. Very Rare. The Sungei Buloh Leprosy Settlement issued its own private currency in 1935-1936. Printed by the Survey Department of the Federated Malay States, these notes were issued as it was believed leprosy could be transmitted to uninfected people by circulated money. When it was proven that leprosy is not transmitted via circulated money, these notes ceased to exist. Surviving examples are extremely scarce in any collection, and remain one of the key notes of the Straits Settlements and Malaya era.