Ronnie, They may have bought the sheath's later on, like after the first batch of knives. Second NASA would not buy a sheath for this knife after it was recovered any way, as it was a private salvage venture on the recovery and if I remember correct NASA may no longer own this space craft any way. And when you start checking some web sites you will find that the first mercury mission the knife was not in a kit but attached to the hatch, further more the Randall Astronaut Knives where not the first in knives in space as far as the United States, In addition to the Randall on Al Shepard's flight there was also a military four blade pocket knife also. oldguy