Robert, again, it all comes down to authenticity. If both are genuine then you have some valuable pieces. I'm not certain about the value of such a fighting knife as I am unaware of any comparable items on the market in recent years. I would venture at least what a genuine dress dagger is worth, and a likely more by virtue of its relative rarity.
However, having said that, my sixth sense doesn't give me positive vibes about this knife. Please don’t take offense. I do own several various edged weapons with blade embellishments, but by no means am an authority. I can safely say I have never seen anything in the way of period blade work like this. I am hopeful someone knowledgeable will weigh in to confirm or dispel my gut feel.