Malaya. (Federated Malay States). 1935. Registered Air Mail Federated Malay States postal stationery envelope 'fifteen cents' indigo upgraded with SG 60, 4c orange (pair) and SG 75, 50c black/green tied by Batu Gajah /F.M.S. date stamp with matching registration label and 'By Air mail' label, addressed to London with Penang transit. Very fine item of mail from Perak.