After finishing Navy Dive School, back in 73, I was stationed on a sub tender and issued a MK2 Kabar for a dive knife. Pretty much a "daily carry" on the belt ,right next to the film badge case, and it suffered mightily from the salt water, humid air and rough use. I still have it, though I did replace the leather handle and the issued sheath was lost.
I have a wide assortment of other knives but when I pick up that particular one it reminds me of another time, place,and younger, me...