Picked these up from Edson razors a few days ago. Not much information on them except Joe said he believes them to date from the early 1800's. Very heavy grinds just short of being true wedges. They both honed up beautifully on my coticule and shave well. The blade shape needed a narrower hone and rolling X strokes to get the most out of them. The ivory scales are beautiful and free from cracks.