I had one of the factory blacked out command II versions back in the 80s. Don’t remember selling it, never did figure out where it went. The command II is just larger, having a longer blade. I preferred it over the double edged version, as it has a much thicker blade.
As I recall, working in a knife shop back then, they didn’t serialize them, so there’s no way to really date it.
It’s worth? Hard to say. Some older knives bring money, some don’t.