China. (Hong Kong - Censorship). 1941. Envelope written from the 'Asian Customs House, Swatow' addressed to Sweden' bearing SG 421, 50c green (not valid) with circular 'T' hand-stamp (erased), endorsed 'via Siberia', routed via Hong Kong with Victoria transit '5th Feb' and 'Opened by Censor/ Hong Kong' label (red on white) tied by boxed '103' in violet and Bodapor arrival on reverse '6th March.'
Interesting item of 'Invalid Mail' to Sweden via Hong Kong from Swatow.