I have (I suspect) a mid 50's Evinrude Ducktwin motor serial # 3016-01731. Can anyone tell me what the year and horsepower are? I'm looking to sell the motor and maybe get an idea what it's worth before hand. It appears to be very origional and was told that it runs fine prior to aquiring it. It's been stored in my heated garage for the past 7 yrs however never attempted to start it. Due to its excellent condition and simple enineering bearing no cylinder problems it shoudn't take much to get it running? Can anyone help, thanks, Aaron