I have looked at my title and everywhere on my motor for the model number and can not find it. It is a 1984 Evinrude 150 and it has 75th anniversary on it and is blue in color. Can you tell by the serial number ?<br /><br />I see a lot of ELO EXP or what ever on model numbers being posted and cant find anything close...thank you in advance...singed boat newbie.