Knife collecting is a hobby which includes seeking, locating, acquiring, organizing, cataloging, displaying, storing, and maintaining knives. Some collectors are generalists, accumulating an assortment of different knives. Others focus on a specialized area of interest, perhaps bayonets, knives from a particular factory, Bowie knives, pocketknives, or handmade custom knives. The knives of collectors may be antiques or even marketed as collectible. Antiques are knives at least 100 years old; collectible knives are of a later vintage than antique, and may even be new.