Bendix Spring Question

[29As]

Hello,
I picked up a few Bendix Springs in a box of "Model A" parts and noticed a couple variations. Mainly, some of them turn in an opposite direction. In the attached photo, the spring on the left appears to be a Model A spring, while the one on the right is "opposite" in terms of the direction the ends are turned, and the direction the spring turns. Also, the one on the right has a very slightly smaller inside diameter. Can anyone shed some light on this mystery. Thank you.