The Camillus Cutlery Company was one of the oldest knife manufacturers in the United States with roots dating back to 1876. The company manufactured Camillus branded knives and was a prolific contractor for other knife brands up until its last days in 2007 when the company filed for bankruptcy.
Craig,
I don't think thees are real rare, but not real common either.
I would think that they should bring in the $40 to $60 range. There was one on ebay last month that sold for $40 without box, though it was a bit different.