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Amgueddfa Cymru – Museum Wales
The Plynlimmon Lead Mining Company Limited, £10 debenture bond "A", 1878, black on blue. * Black print on blue paper with handwritten details completed in black ink. Embossed company seal on lower right hand corner. £10 debenture numbered 45 with interest at the rate of £10% p.a. Dated 10 September 1878.
