When I visit a popular online auction site I see a substantial number of traditional folders being offered as mint but no box. Should I be wary of these no box offerings? Are these knives in many cases manufacturer seconds? I can understand an occasional knife getting separated from it's box during a resale process but it seems that up to a third of the traditional folders offered online do not have their original box. This is especially true with a lot of the Schatt & Morgan brands. What do I need to look for? I'm a newcomer to collecting and relying on your knowledge to help me out. Thanks in advance.