Commercial cover with printed 'ALLARDYCE LUMBER CO. LTD' imprint on flap with fine strike of oval ALLARDYCE POSTAL AGENCY STA. ISABEL IS. B.S.I.P. 'Crown' originating cancel dated 19 APR 1970 in blue black on reverse, franked with single 1968 3c green, myrtle green & black QE2 issue (SG 168) tied on arrival by HONIARA machine cancel. Addressed to HONIARA. This is the earliest recorded date for this Postal Agency.