细节
A brass mathematical medal
titled Arithmetical Medal/Numerical Pocket Piece; Table for Multipn. & Division by a new & short method/Sold by I. Maddux, at the hand & pen in Brook Street, Holbourn/who teaches abroad, or privately at home., with multiplication and shillings/pence tables, dated 1753 -- 1¾in.(4.5cm.)diam. (holed)
titled Arithmetical Medal/Numerical Pocket Piece; Table for Multipn. & Division by a new & short method/Sold by I. Maddux, at the hand & pen in Brook Street, Holbourn/who teaches abroad, or privately at home., with multiplication and shillings/pence tables, dated 1753 -- 1¾in.(4.5cm.)diam. (holed)