Here is a close up of the signature for this latest dagger. I can�t be completely sure from the image because there may be computer generated artifacts. But it almost looks like it was (rotary?) engraved to give it more depth before being treated with acid? With my thinking being that acid left in it long enough too make it that deep. Would also have attacked the softer steels more aggressively making the grain structure at the (letter) bottoms more pronounced, instead of having what seems to be some letters with relatively smooth bottoms. (Perhaps some even closer images will help. But this is what I seem to be seeing at the moment.)
