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SOLOMON IS. - 1957 (23 Sept) Air Mail cover to New Guinea bearing QEII 2d and 1s definitives tied by large 'BARAKOMA AIRFIELD' handstamp and straight line '23 SEP 1957' datestamp; alongside rare 'VATA KADU' violet cachet. The Vata Kadu was a native-owned vessel often employed in running the mail from Choiseul Island to Barakoma.