Young's adjustable perforators, for punching double holes in denture plates, probably English manufacture, 1900-1940 Young's adjustable perforators 1900-1940
Young's adjustable perforators, for punching double holes in denture plates, steel, by C. Ash and Sons, England, 1890-1930 Young's adjustable perforators 1890-1930
Perforator, Denman's by J. Coxeter, London, latter half 19th[?] century to early 20th century, plated steel Perforator, Denman's by J. Coxeter 1851-1930