In 1955 My father & I went fishing at a camp in Ontario. He borrowed a 5 1/2 Johnson from his brother. It was the first of the green full gear shift models. It ran perfect. I bought one like it a couple years ago and although it's 56 years old, it starts cold on the second pull, and first pull the rest of the day.
I like the old coil ignition Johnsons. As long as you keep good coils in them, and use good premix, they seem to run forever. It's hard to find a worn out one because usually, eventually, they find an owner who can't afford to fix them when the coils finally do go south, then they sit unused for years until someone like me comes by to buy them. At least here in Wisconsin.