Silver and Ivory Letter Opener Made by Mordan in 1909, London. This elegant letter opener was made in 1909 by S. M & Co. It is 17.2 cm (6.7 inches) long with elongated pear shaped silver handle and ivory blade. The handle is fully hallmarked: silver, Chester, 1909. The ivory blade is inserted into a notch in the silver handle. S.M & Co, was known as Sampson Mordan & Co. London.