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Amgueddfa Cymru – Museum Wales
The Mwyndy Iron Ore Company Limited, £4 ordinary shares, 1880, black on white. * Black print on white paper with handwritten details completed in black ink. Ornate border on left only. Embossed company seal on lower right hand corner. 20 £4 shares numbered 6491 to 6505 and 6516 to 6520. Certificate number '1142'. Dated 16 June 1880.
