Yes, those are Duro/Indestro. As best I can figure, from the 60's or early 70's. The good folks at Alloy Artifacts had not even heard of the "Western" brand name. I've got a few extras if you're wanting to build a set. I'm still looking for a 6" or longer extension so that I can feel complete. This is my set.
I have a set of SAE shallow impacts from same brand. My dad got them way back in the day
Do you know approximately when he got them. Like I said, my date range is more of a WAG. I inherited the beginnings of my set when my dad passed away so, sadly, I can't ask him.
Sorry to hijack your thread, Idlem.