Netherlands East Indies. (Trans-Pacific Mail). 1940. Air Mail envelope addressed to Boston bearing Netherlands Indies SG 403, 10c vermilion and SG 410, 50c indigo tied by Batavia Centrum date stamp '31st May 40', endorsed 'via Imperial Air Mail', routed via Penang with 'Crown/ Passed by Censor' label tied by boxed 'Passed By/ 15/ Censor' hand-stamp. Nice routing via Penang.
Lovely item with red vertical lines JUSQU'A mark applied at office of exchange.