1917 Norwegian War-Internee Mail to China, 5o postal card uprated with 5o Numeral canceled by "Oterholt 28 VIII 17" cancels, additional markings include a straightline "Krieglangepost Norge" at top, British and Norwegian censor marks, British PO and Chinese Shanghai cancels, Chinese chop at upper left, card with a couple of spindle holes at top with one affecting the stamp, fine and scarce