VERY INTERESTING POCKET KNIFE.  Right out of 1965 as marked.  Also marked "ITC"
 
From what I have found online this was mostly made for fishermen or farms where rope is used.  The marlin hook is for help loosening knots.  The piece with two ends is for cutting rope, etc.
 
Vintage and from the same estate sale out of Croton Ohio.
 
4.5" long when closed including the loop.
 
All of the knives open and close.  Signs of age as it is an older knife.  No damage to any of the blades.  It has some writing on one side of the handle that should clean off it wanted.  Still has the loop which is usually missing.
 
COOL KNIIFE!!
 
Location E2