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Amgueddfa Cymru – Museum Wales
Powell Dyffryn Associated Collieries Ltd. and the Powell Dyffryn Steam Coal Co. Ltd. confirmation certificate of lading for 1088 tons & 11/20ths of Powell Dyffryn washed duff steam coal on board the S.S. ALFA. Dated 16 June, 1937 at Cardiff. Black print on white paper with typed details in black ink.
