China. (TRANS - PACIFIC -VIA BANGKOK - HONG KONG). 1939. Registered Air Mail envelope addressed to Amsterdam, Netherlands bearing SG 398, 5c green, SG 401, 20c blue and SG 430, $2 brown tied by Shanghai date stamp '26th Sept 39' with matching registration label, endorsed 'via Hong Kong/ Bangkok (or Singapore) and 'per K.L.M.' with hand-struck 'Registered' and Registered/ Hong Kong transit on reverse '3rd Oct 39' and Amsterdam receiver on face. Very attractive item routed over the Pacific on K.L.M. via Bangkok