I believe the blue bike is a 1971. Kawasaki produced one color per year on the 500 Mach III 1969 white, 1970 Red, 1971 Blue, 1972 Orange, 1973 Green.
The 1971 500 MACH III had a CDI ignition three cylinder two stroke and produced 60 horse power at 7500 rpm. 1/4 mile et of 12.4 top speed 124 mph. It was the fastest production motorcycle made until the 750 HII came out in 1972.
Yeah, I am sure u r right,the first one was used and it was blue and the title called it a 1969??? But then, when I think about it, back then it might have been anything, Jap motorcycle titles were all over with all of the crashed ones....?? I'm just sayin.... It has been a long time ago too

Yeah I test road a 750, crashed it in front of the M/C shop......

I also remember how poorly they stopped and how poorly they went around corners... Stop light racing was always stupid fun. I am so lucky that I am still here....