This is my first time here and I am trying to help my dad find a missing knife or tool to his set. He has a display case that he has found all of the knives for but there are two other cut outs in the foam that does not have a model number. I assume it is a tool but I'm not a collector (yet) and am not sure. One of the knives in the set is PKCN63CT (not even sure what that is but just want to help my dad). If anyone knows what the missing piecies are please let me know. They appear to be the same thing but just one is shorter than the other. Thanks for any help.