Good old pocket knife from an estate sale out of Croton Ohio.
 
Boker USA.  Made between 1945 - 1983 per the tang stamp.  Model 8573 as marked.  Stockman.   BEAUTIFUL HANDLES! that look to be jigged bone...see pictures.
 
This is an older and larger USA made pocket knife!
 
Nice and tight great snap.  Light signs of age only.  One hard to see hairline barely worth mentioning.  Great chance for a collector.
 
4" long when closed.
 
Location D2-22