Merc 2.4 - Year Identification

[cutwater]

I've checked this serial number from the welch plug (5968085) on PartsExpress, it tells me it's a 2.4L model 1200640.

Could someone be kind enough to identify the year? Or point me to a better ID database?

Thank you kindly in advance.

[dynobo]

1981.

[cutwater]

wow, you guys are great! an answer in under an hour!

THANKS VERY MUCH, dynobo!