Fish was one of Fire Ball Roberts sponsors in the early years. It was called the 100 mpg carb(never happen). 17 parts and only three moving parts. Saw one used in 1966 and finally found one last year. It is now in a glass case
not so much rare as the history and one of the few things I remember from the 60's.
got together with friends from high school and they remembered the Fish from shop class too