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Amgueddfa Cymru – Museum Wales
The Bryn-Rhyg Collieries (1930) Limited, 10/- ordinary shares, 1931, black and blue on white. * Black and blue print on white paper with handwritten details completed in black ink. Ornate border surround. Embossed company seal on lower right hand corner. 60 10/- shares numbered 8855 to 8915. Certificate number '14'. Dated 21 January, 1931.
