Can You Identify These Springs For Me?

I just bought a 1960 CJ5 with a set of new springs on it. The front springs are stenciled "AA 1122" and the rear are "AA 1155". This is a project that was started but never finished, the springs may have been installed about 10 years ago. I've searched using those numbers but haven't found anything. I will appreciate any info you can give me on those springs.

For more info on this Jeep, including detail pictures, plus info on our "Targhee Fall Vintage Jeep Ride", see our Facebook group of that name.