Can't help, I looked through several catalogs and the wiki and nothing. I seem to remember seeing one posted on the forum before but can't find it. Hopefully basilio will know.
Try looking at some "Classic" models from Wenger catalogs. They have many different models like this
Smart Knives lists it as a Canoe. Don't know where they got the info. My Canoe is considerably larger.http://www.smartknives.com/Wenger-Pocket-Knives/Canoe.htm
Canoe or not, it's Great Score
Smart Knives says it shows up occasionally with a canoe on the handle. Wouldn't be the first time Wenger has used an inlay on more than one knife. Shown are two different sized knives with the duck logo. The fishing fly has also shown up on several different models.
Looks like a hard nut to crack, but we'll keep the faith ...
Tell me baby, wenger hurt you, do you keep it all inside?