1943 (Dec 2) Airmail envelope registered to Royal Dutch Forces, P.O. Box 237, London E.C.1 bearing on reverse GV1 pair 4d & pair 1½d making 11d rate tied double ring Gibraltar Camp cds & with matching Registration label No 3525 from Evacuee Chr. v. d. Wicken, Gibraltar Camp 11, Kingston & with on left PC90 OPENED BY EXAMINER 622 preceded with blue crayon ID/ Label & on opposite side PC90 OPENED BY EXAMINER 882 label with on reverse oval Kingston Jamaica /Registered (3 Dec) despatch mostly obscured by the 622 label & Miami (9 Dec) transit date stamps …. After France fell in 1940 it was felt the Germans could advance through Spain threatening Gibraltar & denying the allies access to the Mediterranean. British authorities decided to evacuate as many as possible of the civilian population of Gibraltar to safer zones, mostly to the UK but 25 Oct 40 a group of 1104 of these evacuees arrived at Kingston with a further 400 evacuees arriving Port Arthur on 15 Dec 40. These evacuees were deemed Wards of the Crown & were not allowed to follow crafts or professions for pay nor could they reside anywhere other than the camp. All the able males were mobilised into the Pioneer Corps & as such acted as guards for the POW & Internment Camp. Ref..The Military Mail of Jamaica by Derek Sutcliffe 1982……..