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Amgueddfa Cymru – Museum Wales
Navy print on white paper with ornate border surround. Cwmgwrach & Empire Collieries (Proprietors: C. & E. Collieries Ltd., Cardiff and Swansea) shipping certificate to certify that 150 tons of Cwmgwrach "Big Vein" anthracite cobbles had been shipped to S.S. ADRIA at Swansea. Dated 4 September, 1937.
