After a long search and many dead ends I have finally sourced the OEM spec Red throttle and choke knobs used on many Bolens tractors!!!!
Knob is exactly like the original 1724527!
Pricing and more info to come, this was a sample I had sent to me so only have the one now. I also have new control heads & cut to fit cable as well so essentially we will once again have brand new assemblies for our machines!