Hang on to them, they are not being made anymore. Until recent years and the trans-Pacific deal by Clinton, Imperial was making some good knives in Ireland. They were low cost and had black fiber handles, buy them if you find them.
Those old carbon blades are to be treasured. Right now in my jeans pocket, I am carrying a German made knife that closely resembles the Victorinox line. This one is 3.5" long, with a spear + pen blades, along with mahogany grain celluloid handles.
Only 1/4" thick..and made in Solingen between WW1 and WW2. I enjoy carrying history..