I don't have any markings to go off on this axle. It was very rusty. It took a lot of sanding and glazing putty to look good. I'm upgrading from a 8-3/4 for a 4 speed conversion. My original axle is rust-free and has all the original markings intact. I'm trying to make this differential look as nice as the one that is coming out. Original dana 60s are long gone around here, so I had to buy one out of state and restore it.