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Amgueddfa Cymru – Museum Wales
City & Guilds of London Institute Colliery Mechanic's Certificate held in 1963. Issued to Granville David Thomas who "attended a Course of Instruction at Technical College of Monmouthshire, Crosskeys passed in the year 1963 the Examination for the Colliery Mechanic's Certificate." Black print on cream paper within red border. Details typed in black.
