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R. B. Prosser

revised by R. C. Cox

Oldham, John (1779–1840), artist and mechanical inventor, was born in Dublin. He served an apprenticeship to an engraver at a calico printing works in Dublin but subsequently pursued a career as an artist. While based at Newry he also developed his interest in mechanics. He invented a machine for individually numbering banknotes to prevent forgery and, in 1812, laid his plans before the ...