Gunner777 said:
I would have no reservations at all about buying from them. Just my opinion but these days the idea of only 2 out of a large number of stones being fit for razor sharpening doesn't seen plausible.
It has never been plausible. But you have to understand that Coticules were once mainly used for what many now call "bevel setting". Once a thin slurry starts running up the bevel well, the work on the Coticule is done and the edge is further refined on a pasted strop. This method is still successfully used and taught in Belgium (and probably in other countries).
But they all can be used as finishers as well, as long as one manages to bridge the keenness gap between the slurry level and what is required for successful finishing. For that we had to (re)?-invent Dilucot and Unicot and it can also be done with the aid of a synthetic go-between hone, or even with a BBW.
But someone who attempts to shave after the slurry stage, or jumps straight to water without any intermediate step, will indeed find that only a very small minority of Coticules can deliver a reasonable shave. But with the right approach, that observations becomes irrelevant.
Kind regards,
Bart.