This is the Case Cutlery Large Stockman, has Jigged Bone handles and Nickel Silver liners.  The blade steel is CV and finish is Polished.

Maker : Case Cutlery
Handles : Jigged Bone
Pattern : Large Stockman
Model : 6375
Condition : *Near Mint
Year Produced : 1975
Blade Steel : CV
Liners : Nickel Silver
Bolsters : Nickel Silver
# Blades : 3
# Backsprings : 2
Closed Length : 4 5/16 inches
Half Stops : No
Factory Box : Yes
Blade Finish : Polished
Country : USA
Notes: : *I recently bough a xx75 pattern collection that contained the best of the best condition knives. All of these knives are over 50 years old and will have a spot or two (which I will note below). 

*Some very light spotting on main/spey; little deeper on sheepsfoot.