It looks very simple…….but extremely hard to find https://www.netpha.nl/history/it-looks-very-simple-but-extremely-hard-to-find/
Military Mail from Belgian UN-troops during the Korean War

Military Mail from Belgian UN-troops during the Korean War – Netherlands + Philately
Belgium, together with Luxembourg, sent a UN-contingent to Korea in 1951. This contingent, the Belgian United Nations ...
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