It looks like it may be from around 1958 as it looks like this one... Evinrude 18 hp Fastwin 1958

There should be a serial number on it that identifies the year, but late 50s sounds plausible. Great Brooks Stevens design to it!

Heck, you know i LOVE doing that stuff. Don't play with them much any more, but once upon a time...

Now if we could only get yours to start & run like that...

FIL confirmed, Kids used to ski behind it. It won't pull us up, but perhaps one of these would be fun...