what is model no and sn of my old johnson 40

[david lesh]

i have a johnson 40 hp superseahorse no name plate. it has a round plug near the back and on top of engine (j2543391) can some one take that number and identify my outboard. it has ele start and pull start ele choke,it is a long shaft. with electric shift. motor runs great. i newer new it would be so hard to identify. maybe someone out there can find a model number and year for me.
thank you

 

[tmcalavy]

Re: what is model no and sn of my old johnson 40

Model number or a pix would help. Johnson 40's were RD-XX serial numbers up through at least 64.