Wood Carving Knives
The world of knives is as vast as it is sharp. The sheer amount of different kinds of knives available to consumers is enough to cause a stabbing pain in the chest. Knife collecters certainly have their work cut out for them; there are so many different types of collectible knives that only a millionaire would be rich and stupid enough to try to own all of them.
There are different reasons for why a certain type of knife might be seen as collectible. Wood carving knives are a good example. Instead of being used as cutlery or for killing people, wood carving knives are used for actually creating something instead of simply destroying things. This is a big reason why knife collecting community is so fond of wood carving knives. Further proof of how complex and convoluting this world can be is evident in the fact that the world of wood carving knives, though simply a subcategory of knives in general, is still complicated enough to have subgroups of its own. This is certainly the truth, though. Different carving knives fetch different prices because they all have different shapes and purposes. Some are intended for whittling while other are for more fine craftsmanship. Many collectors actively pursue carving knives that have been used by masters in the field.
Swords are a better example of a group of knives that collectors are extremely fond of. While a sword may not technically be considered a "knife", it is still a sharp, pointy blade that can go into things. The big draw in the sword market is the samuri sword. This makes sense to anybody who has seen a samuri sword before. They look very awesome and are used for battling warriors and ninjas. Still, though, samuri swords are seen as a niche market. This is because many self-respecting people refuse to be seen with a collection of blades made for japanese warriors.
There are some kinds of knives that consistently fail to appeal to serious knife collectors. These include but are not limited to the following: Cleavers, butter knives, bread knives, fishing bone knives, and necks from broken beer bottles. Other than these knives, (and an electric turkey carving knife) you should be able to see a decent investment in a collectors knife grow into a profit. In the end, collecting knives may not appeal to all people, but it certainly appeals to most weird people. Why not get a knife catalog and take a stab at the hobby?