Hi Rob
Yea, the the 1918 appears to be etched the same way but it is done in a more sloppy manner than the rest. I still think that was an add on at a later date because of that.
My M&D razor shaves as well as any other SR that has been given a good honing. No magic to them that way just good shavers if the rest are like this one.
Put an edge on one and have a go with it. Nothing like shaving with a piece that has a Canadian connection if you are a Canuck, EH.
Bob