RAF Far East cruise 1930 envelope from Kuching to Singapore en route to Kuala Lumpur Malaya, franked at 29 cents with Kuching cds 5 jul, with " By AIR MAIL " label and violet registration cachet no. 5492, unusually the cover is also inscribed " Per R.A.F. Airship S1419 " and inscribed " Unknown, return to Mae Ying, 8/7 ". On reverse markings Singapore 7 jy, Kuala Lumpur 8 jy, Singapore 9 jy and Kuching 14 jul