This is exactly the type of response I was looking for, with lots of pictures and explanations. Thank you, Cotiga!

I actually started polishing with stones to reveal the quenching line, because I know some of them were quenched like swords and that just looks awesome. Still, these are in fantastic shape and quite special.

Stefan, I actually don't think this is iron anymore, having rubbed it with at least 5 different stones. It's not as soft as iron on a kamisori. Probably DH, as you said.