I started life as a bayonet collector aged 12! A fascinating subject and one that, unlike swords, is still within the reach of the average beginner collector. This field is extremely well-covered by good reference books, mostly in English (such as The German bayonet by John Walter and British & Commonwealth bayonets by Ian D Skennerton & Robert Richardson), and tends not to be readily plagued with reproduction items. As a subject, it's an excellent introduction to the restoration and care of edged weapons.