graves pocketwatch circa 1890

J G GRAVES SHEFFIELD, THE MIDLAND LEVER, SWISS MADE, HALLMARKED(BOTH MOVEMENT AND CASE) SWITZERLAND. IN WORKING ORDER, TINY PIECE OF WEAR TO BOTTOM OF ENAMEL FACE WHERE IT RUBS AGAINST THE INSIDE OF THE CASE. INNER AND OUTER CASE MARKED 310156 AND 0.935