South West Africa 1919 Unstamped Env Returned envelope from Paris France to South West Africa cancelled on arrival by WINDHOEK CDS with blue passed by censor, various instructional cachets including UNCLAIMED, NOT KNOWN, RETURN TO SENDER and RETURNED LETTER OFFICE CAPE TOWN on reverse. Very interesting and unusual item. (pt) South West Africa 1919 Unstamped Env Returned envelope from Paris France to South West Africa cancelled on arrival by WINDHOEK CDS with blue passed by censor, various instructional cachets including UNCLAIMED, NOT KNOWN, RETURN TO SENDER and RETURNED LETTER OFFICE CAPE TOWN on reverse. Very interesting and unusual item. (pt) South West Africa 1919 Unstamped envelope Cover from Paris France to South West Africa cancelled on arrival by WINDHOEK CDS with blue passed by censor, various instructional cachets including UNCLAIMED, NOT KNOWN, RETURNED TO SENDER and RETURNED LETTER OFFICE CAPE TOWN on reverse. Very interesting and unusual item. (pt) South West Africa 1920 Reg PSE RED "SPECIMEN" Postal Stationery Envelope KGV 6d Blue, Very fine. (pt) South West Africa 1916 Prisoners of War Mail P.O.W. envelope to France with Censor cachet "Passed by Censor Prisoners of War Free of Charge / Aus" with Opened by Censor / 103 label on reverse and Paris arrival. (pt)