China. (Hong Kong). 1941. Air Mail envelope to French Maroc bearing Yvert 162a, 15c blue, Yvert 166, 30c orange/brown, Yvert 167, 50c sepia and Yvert 11, $1 black tied by Saigon Central Cochinchine date stamp, sent by Pacific Clipper via Hong Kong with 'Opened by Censor Hong Kong' label and boxed '42' cachet, Manille, San Francisco and New York with French Maroc 'Controle' label and 'Ouvert YB/603 Contrple' censor cachet.