China (Express Mail). 1930. Envelope addressed to the 'French Gare/ Maritime, Shanghai' bearing SG 312, 2c green, SG 315, 4c olive and SG 321, 10c blue tied by Canton date stamp, sent 'Express' mail with 'Express Delivery' label on reverse and boxed Post-Mans chop arrival in Shanghai. Paying the scarce 16 cents tariff for internal Express Mail.