1979 Mercury Outboard Models Where can I find my serial number? 3.6 [ML] 1003229 3.6 [M] 1003209 4 [ML] 1004229 4 [M] 1004209 4.5 [ML] 1005229 4.5 [M] 1005209 7.5 [EL] 1007529 7.5 [E] 1007509 7.5 [ML] 1007229 7.5 [M] 1007209 9.8 [EL] 1010529 9.8 [E] 1010509 9.8 [ML] 1010229 9.8 [M] 1010209 TH [D] 1001309 TH [R] 1001409 TH [T] 1001209 20 [EL] 1020529 20 [E] 1020509 20 [ML] 1020229 20 [M] 1020209 40 [EH] 1040539 40 [ELH] 1040559 40 [EL] 1040529 40 [E] 1040509 40 [ML] 1040229 40 [M] 1040209 50 [EH] 1050539 50 [ELH] 1050559 50 [EL] 1050529 50 [E] 1050509 50 [ML] 1050229 50 [M] 1050209 70 [EL] 1070529 70 [E] 1070509 80 [EL] 1080529 80 [E] 1080509 90 [ELPT] 1090629 90 [EL] 1090529 115 [ELPT] 1115629 115 [EL] 1115529 115 [EXLPT] 1115649 140 [ELPT] 1140629 140 [EL] 1140529 150 [ELPT] 1150629 150 [EXLPT] 1150649 175 [ELPT] 1175629 175 [EXLPT] 1175649 200 [ELPT] 1200629 200 [EXLPT] 1200649