i have just received an ebay knife: a Hen & Rooster 1984 National Knife Collectors Association, bone handled, 4 1/8 in. lockback (serial L0485). it has a very thick blade: 3/16 in at spine, with little bevelling to edge and NO edge grind at all (but a very shiny stainless blade). to cut ANYTHING this knife needs some serious work. so, my question: is this frequently the case with commemorative knives ? that they are made for display, not use ?