Good evening sir, I hope this is not faux pas to reply to a post so old. But I was trying to research a double bit I found today. And guess who popped up LOL. It is a diamond edge forged steel tool without the diamond stamp. I did a pretty specific search, as a general search led me nowhere. That dropped me right here. So I hope I am not breaking some sacred
forum decorum.

It reminded me of a Kelly which is what I find mostly as far as double bits go.