Philippines. (Trans-Pacific Mail - Singapore). 1940. Air Mail envelope addressed to Switzerland bearing Philippines SG 533, 30c vermilion (strip of three) and SG 561, 6c green tied by Cebu P.I. roller 'May 17 40', endorsed 'via Singapore/ K.L.M.', routed via Singapore with censor tape tied by 'Passed By Censor 63/ Singapore' on face and reverse with bold 'A.V. 2' hand-stamp in red (small type hand-stamp).
Scarce small type 'A.V. 2' hand-stamp listed by Proud as used in Singapore (15.2.40) - (9.5.40).