Bronze Age Gold from Wales

Letter typed in purple ink on white paper. A 5-page letter to the British Thompson-Houston Company from G & J Wier Ltd. regarding the Powell Duffryn Steam Coal Co., Bargoed Power Station 10,000 K.W alternator. Dated 27th Sept. 1919. A blue stamp stuck onto the top right hand corner of the first page reads 'Enclosur / No 59' Contained within a moroon hardback file with all other documents under accession number 85.184I/4.