My online researching on this Case model 'Rio Grande Camp Knife' has not been very fruitful, but I've learned a little more about them.
One thing seems to be that their time line was very short lived, likely somewhere between mid 1980's to around 1990.
Well, that short time frame falls right in line with the few years that James Parker owned Case Cutlery.
So, this Case model may have been one that came to be only because of James Parker's ownership of the company, and gone when his ownership of the firm was no more.
As most knife enthusiasts know, knife companies sometimes have other cutleries make knives for them under contract agreements. A good example of this is the now defunct Camillus Cutlery, which was a major maker of knives for other knife brands.
This sort of stuff has always been the norm in the knife world.
For instance, Case' Kabar style knife is made by the Ontario Knife Company, but of course has the Case tang stamp.
The American made Case 'Rio Grande Camp Knife' could have been produced in house by Case themselves, but could have also been outsourced to another USA cutlery.
Whether it was an in house build, or an outsourced product, the quality is definitely there, and certainly worthy of carrying the Case name brand
I'll try digging for more info, maybe seeking an online Case specific forum that will have folks knowing more specific details about them.
I'll make sure to share any info I find out about them
