Le Douk Douk
XC75 at about 53 HRC. My first reaction to this was to think 'soft'. Don't be misled, this blade will hold it's edge very nicely. Treated this way by Cognet to be easily maintainable, strop after use and - depending what you've been doing back up to shaving sharp. Needs a whole different approach to 'super steel'. Any steel, be it S30V, S110V, or whatever will lose it's .05 micron hair popping edge after a fair bit of use. Why 53 then?, well, it's for those who know how to maintain this kind of blade. COGNET did a limited run of hoarder bladed douk's a couple of years ago in stainless and carbon, both at 58 ish I think. They said on their website that they were for those that preferred harder blades but added the advice not to use the blade for prying etc ! (can't remember the steels but the stainless was similar to VG10). COGNET also do now the 'Sons of Douk Douk' range in N690co - nice - see their site. To sum up the Douk is a worker, cheap, beautifully made just about the same way it always has been, although steel was XC65 in 1960 I think, so slight upgrade. Put just over 30° inclusive on the edge, strop when necessary and you're good to go. Built to be a worker, chuck in your pocket and forget it, but take good care of the blade, it deserves it, drop forged incidentally, don't know whether this is why it holds such a good edge or not - opinions vary!, buy one, could be the only knife you'll need !