I believe the manufacturer is Kissing Crane. They have a few Dukes themed knives. I know they're available on eBay. Here's a handy affiliate link for anyone who might want to buy, I get a teeny commission that goes towards keeping the lights on at HazzardNet.com at no extra cost to you (shameless plug ). #ad => https://ebay.us/tG4agG
Christmas is coming up. Looks like a great regift for your old pal Roger Duke. Do you know what year it was made? What company made it? I can't quite make it out. Sweet collectible!