Good old pocket knife from an estate sale out of Croton Ohio.
 
Case XX pocket knife.  Single blade slim trapper.  Made in the USA.
 
Per the tang stamp it was made between 1965-1980.
 
Perfect snap.  Nice and strong.  No wobble.  Handles are in good shape with no cracks.  The blade has light signs of age as seen in pictures.  One of the bolsters has surface wear.  SEE PICTURES.
 
4" long when closed.
 
Location D2-35