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Amgueddfa Cymru – Museum Wales
The Era Welsh Slate Quarries Limited, £1 6% cumulative preference shares, 1898, green on white. * Green print on white paper with handwritten details completed in black ink. Ornate border surround. Embossed company seal on lower centre. 10 £1 shares numbered 51947 to 51956. Certificate number '90'. Dated 10 February 1898.
