The blackie Collin’s sheath missing part of button. USN Mark1 has original sheath but the back of the handle on the knife is made of some plastic material and I’m not sure if it is original to the knife. Other knives include Large Humvee fixed blade and the sheath looks to be a 2 knife sheath.One is Mtech USA one is large knife and not sure of maker, it has a lot of rust on that one one is western boulder colorado fixed blade without sheath.These knives are priced to sell fast!