Excellent example of Heeley & Sons 'A1 double lever', superb example of the famous 'A1 double lever' made by James Heeley & Sons of Birmingham, and patented in 1888. Fully marked 'James Heeley & Sons Ltd, A1 double-lever' on one side of handle. Full mechanism in excellent working-order, with remnants of copper wash still remaining. Full-length finely tapered helix in immaculate condition with sharp tip