Yes I'm sure I could get a vacuum sealer and the bags that go with them if that would truly be the best way to preserve them for a very long time. would keeping a leather handle on a bayonet airtight for a very long time hurt it? Or does leather need tiny bits of moisture in the air to survive intact? I have seen pictures of other people's bayonets before and the leather handles are rotted and ate up but they never said how the handles got that way in the first place. I just want to make sure I store these items in the best way possible to preserve them the best way possible. All my world war two items are likely to stay in my possession for a very long time because I am the type of person that hates to sell anything once I have collected it. When it comes to world war II gear and guns, I am a borderline hoarder ha ha