Reminiscent of the PW "Krupp" daggers (and it's been awhile since I've seen one) what my recollection of the blue diamond knives is that guys who specialized in HJ collectibles did NOT like them at all considering all of them to be fakes. And the surest way to not find any buyers is getting a bad reputation and keeping it alive by educating the new guys, so they stay hidden. (Or get converted back to a red diamond, new grips, whatever.) Best Regards, Fred