sounds like the blade is a German style skinning/hunter style similar to the puma white hunter blade. The blade steel more than likely is 420. Most German stainless steel is 420 and has been for some years now, there is a possibility that it may be 440. Ive seen a knife, I believe is like the one your talking about, with wood handles and explorer etched into the blade. I have a boker knife with a similar blade that has bone handles on it. Is the blade and handle one piece? If it is then it is similar to my boker, and similar to the old puma white hunters (not the new ugly ones, or in my opinion ugly). The blade crossguard and handle would be one piece, and then the handle slabs wood be wood, or bone, or stag. You can go to the knife centers index, go under puma, then click on puma white hunter. The blade shape would be similar to yours (if its what I think it is).
Hope this helps some
sincerely,
John