I double checked the Spyderco website since the other day I got my bento box m390 exclusive delica 4 in the mail. I've noticed they don't list the hrc for it, and as a check I looked at other knives and they don't list the hrc for other models either. I don't question Spyderco but this thread has me worried about my purchase. Though in 2 days of light use I can't complain. I'm loving the m390 delica. True test will be when it comes time to sharpen it.