Did all the Mike Bikes have that pointed joint in the frame at the rear axle? My friend bought a new 68,and I just thought it was a frame made of two identical loops,like my Cat.I just don't remember that sharp joint in the frame.Now,it has been over 40 years,so I could be all wrong,but we did compare those bikes day in day out all summer long.It did have a long seat and two of us could ride on it.