I THINK IT IS A 'SERIES 7' POSSIBLY A 755 MOTOR, IT IS ABOUT 2X THE SIZE AND WEIGHT OF A 540 MOTOR. MAGNETIC SHIELDING, LARGE BRASS BEARING MOUNT ON THE FRONT, WITH OLILITE BRONZE BEARINGS, THICK AND STURDY PLASTIC END BELL, NICE QUALITY MOTOR, 3-15 VOLTS, TESTED WORKING WELL.
