Which Sure Grip?

I know there are 2 different types of Sure grips from the late '60's through the '70's. I'm not sure what I have, since I've never torn one down this far. Can the brain trust educate me with these photos or should I take some better ones. It's a 3.23 SG from a complete rear axle I picked up years ago. Thanks to all. Paul.

Diff1.jpg

SG Diff2.jpg