1908 (Sep. 28) U.S. Postal Agency, Shanghai, China to Germany, registered 1¢ postal card (UX18) bearing 1¢ blue green (300), 2¢ carmine (319), 4¢ brown (303) and 5¢ blue (304), all tied by strikes of "Shanghai, China, U.S. Postal Sta., Sep 28, 08" duplex postmark, purple 4-line "Registered, Sep 28, 1908, U.S. Postal Agency, Shanghai, China" datestamp, endorsed "via Sibirien" at top, German registry etiquette; 2¢ & 5¢ with natural s.e.'s, Very Fine. Estimate  $5,000 - 7,500. AN EXCEPTIONALLY RARE REGISTERED POSTAL CARD USAGE FROM THE U.S. POSTAL AGENCY IN SHANGHAI, CHINA. $0 (Image)