Blackjack knives used to be headquartered in Effingham, IL. Mike Stewart sold the company and then it was moved to a different location. I had a fair conversation with the individual that owned it at that time....in fact I purchased the very same knife as you have there, but with antique Ivory micarta.
I have a few other Black Jack knives from the Effingham factory....I have a Classic Trailguide with stacked leather washers, and a Black Jack AWAC Tactical knife.
