Hong Kong. (Branch Office). 1933. Envelope addressed to Saigon, French Indo-China bearing Hong Kong SG 105, 10c blue (pair) tied by Hong Kong/ Sheung-Wan double ring '17th May 33' (Webb Type J), underpaid and bearing French Indo-China postage dues SG D207, 10c red/orange (pair) applied and tied by Saigon Central/Cochinchine receiver. Lovely item of underpaid mail from Sheung Wan Branch Office to French China.