Proof Perkins, Bacon & Co. a series of five original proof sheets from the roller dies, each sheet (185x128mm to 305x145mm.) bearing multiple impressions of numerous engine-turned background patterns, security devices, borders and side panels used mainly in the design of banknotes, though some philatelic applications may have been made; also a similar proof by Ebenezer Bacon (230x150mm.) and a £1 banknote by Perkins, Fairman & Heath "Specimen of the Siderographic plan for preventing the forgery of banknotes submitted to the bankers of the United Kingdom"

Details

Proof Perkins, Bacon & Co. a series of five original proof sheets from the roller dies, each sheet (185x128mm to 305x145mm.) bearing multiple impressions of numerous engine-turned background patterns, security devices, borders and side panels used mainly in the design of banknotes, though some philatelic applications may have been made; also a similar proof by Ebenezer Bacon (230x150mm.) and a £1 banknote by Perkins, Fairman & Heath "Specimen of the Siderographic plan for preventing the forgery of banknotes submitted to the bankers of the United Kingdom"