50 HP Merc Outboard Identifying year

[LittleWalter]

I recently purchased a vintage merc 50hp and am having a problen identifying what year. Can anyone assist? Serial # 1856733. Gold colored shroud and 4 gold stars on shaft below motor. Please help if you can. Thank you

 

[GA_Boater]

Welcome aboard, Walter.

1965;

 

[racerone]

I believe 1965 model.------Post some pictures as that might make it easy.