Things You'll Need
Instructions
Research the various types and styles of switchblades, or automatic knives. There are basically two types, side-opening and out the front. Decide to collect one type or both.
Register with the local sheriff's department. Switchblade knives are illegal in most areas of the country. To possess the pieces, one needs to register as a collector with the local authorities. There may be a fee for this registration.
Secure the knives in display cases or lock boxes. Even as a registered collector, an owner is typically not allowed to carry or brandish a switchblade knife.
Communicate with other collectors through the internet or local collecting clubs and trade shows. This communication will allow you to buy and sell the switchblades legally with other registered collectors.