Help!!! Recently bought old outboard, has no ID plate on it, is single 2 1/8 diameter piston 2-cycle w/ egg shaped fuel tank wraped around magneto, pull rope wraps around top of mag and comes off after pulling, is water-cooled, has Eisemann Magneto Corp,Brooklyn,NY w/Model #61-M and Serial #47-B stamped on bottom of magneto, cast iron cylinder body w/#463 on left side and #1881 stamped on right side, # inside lower unit is 63-310 and # 463-3102 on lower unit cover, carborater has cork float w/Tillotson, Toledo, Ohio stamped on top of fuel bowl w/ # AJ16A stamped on side. Appreciate any help in identifing make,year, and horsepower of motor