Ok, got it figured out after some extensive research.
After the 1962 Husky " steel Paddle" knobs were kicked to the curb, the very late 1962 600's & Early 1963 600 and 1963 800 both utilized a new lever housing and knob assembly 1714218 which were sold as complete units just like the previous ones in 62'.
This is the style with the knobs laying straight down. (Knobs were black)
This idea evidently was a poor design and somewhere down the line it got phased out midway 63' and they finished out the year with angled levers 1714367 and black Knobs 1715794
So from what I can put together these were only produced a year or less.
For 1964 a design change was made as well as a service bulletin going out now announcing that these parts for the control cables could now be purchased separately These new styles used angled lever's with red knobs , which is the common ones you mostly see.
Of course there still is some grey area like Why Have I seen the "old" 1714218 levers on husky 900's like this post for example. I guess we'll never know for sure. You sometimes have to guess as 40+ years is a long time for someone to swap control housings with a different model, They may even have recalled the straight 1714218 levers and offered the new replaceable models free of charge (This was often done by Bolens with many defects found later after a model was introduced)