The Case XX P172 Buffalo Folding Knife is a vintage collectible knife made in the United States. The blade is poloshed carbon steel the handles are pakka wood. The knife comes in a wooden box.

 It comes out of private collection and has never been carried, used, or sharpened.  There is a very tiny "pepper spot" on the blade and the knife does have the usual signs of being handled.  See pictures.

Closed the knife is approximately 5.5 inches.
The blade length is approximately 4.5 inches.