From the excellent resource of militarycarryknives.com: "The Command II knife is very similar to the Mark II. It has the same handle and the blade is the same length. However the Command II blade differs in several ways. First, the blade is not double-edged. Only the bottom edge and 3 inches at the front of the top edge are sharpened. Second, there are serrations (teeth) only on 2 of the 3 inches of the sharpened top edge. I've only noted one Command II blade without serrations. I don't know much about these knives. They were possibly designed for locations where a double-edged knife was illegal. They are serialized in the same manner as the Mark II. They can be found with tool steel blades and 6-digit numeric serial numbers (e.g. 007203) as well as stainless steel blades with an alpha-numeric serial number (e.g. A7420S). They were issued in two versions, the first with a satin finish blade and the second with a black blade. There were no camouflage versions of this knife. For the satin finish blade knives, the highest tool steel bladed serial number I've noted is 015197. The highest stainless steel bladed serial number I've noted is A9444S. The black blade models were only offered in stainless steel. The black bladed serial number range I've noted is between A3512S and A8019S. These serial number ranges imply that less than 22,700 of the Command II knives were produced. The Command II was probably produced only between late 1979 and 1982. I suspect that there wasn't a big demand for these knives and so they were discontinued. " This one is in excellent condition with the original black leather sheath. Serial 013038.