Re: ANTIQUE OMC OUTBOARD IDENTIFICATION Home › Forum › Ask A Member › ANTIQUE OMC OUTBOARD IDENTIFICATION › Re: ANTIQUE OMC OUTBOARD IDENTIFICATION keesInternational Member - 2 YearsReplies: 516Topics: 17 April 25, 2018 at 7:49 am #74721 .. model 407 is a Lightwin , year 1932 , 4 hp good luck ..