I have to agree 100% with David. That is NOT the knife recovered from Liberty Bell. I was able to look at the actual knife recovered from the capsule when the exhibit stopped in Denver. In fact I made it a point to get there one morning just to be able to see the knife alone without the distraction of other people around.

While the knife dug out of the muck at the bottom of the capsule looked well preserved, the knife in the pictures shown in this thread is pristine. Additionally no leather sheath was present in the exhibit nor mentioned anywhere. The linked pictures aren't great but do represent the knife that I saw.

Liberty Bell 7 knife

Jon