Decoding Serial Number

[OldCoyote]

I have an older 20HP Evinrude made by OMC Canada. I can't decode the serial number for year etc. using any of the guides I have found online. It's 205B62BC. Can anyone help?

 

[F_R]

1975

 

[OldCoyote]

Thanks!

 

[StevesShadow]

1975

View attachment 379898

What happened between the 1929 and 1970 years ?

 

[racerone]

Just need to find all the pages with the model numbers !----They are easily found.