Old Robert Klaas Hunting Knife

I found this old hunting knife in my home.  It is about 10" long with a 6" blade and a bone handle.  The blade says ROBT KLAAS GERMANY on one side [near the handle] and KLAAS SOLINGEN on the other.  The leather sheath has a side profile of a Native American's face.

I don't know much about knives so I can't really give a much better description.  Hopefully the saying "a picture is worth a thousand words" holds true.  Ha ha.

Do you think there is any value to this knife?  Should I look to get it cleaned up/restored?

Thanks for your time.  I look forward to hearing your thoughts.

Poor