In 1955, the state owned Ceylon Government Railway manufactured Sri Lanka's "first" diesel-electric locomotive using old spares from the withdrawn and scrapped Class S1 DMU power sets.

Two years later in 1958, the railway manufactured another locomotive and classified it as the Class M3 No.

[2] The reconditioned Jayanthi was built at the Ratmalana Railway Workshop under the guidance of Chief Engineer Mr. Raj Gopal.

The inauguration of the train was performed by Maithreepala Senanayaka, the then Minister for Transportation.

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