Well, that's interesting Jim & Jim but if Leadbelly's not singing "telly" (which I can't imagine he is) then he's definitely singing "jelly", as posted by Jason Luna (suspicious name) above. So if we assume that the most treasured possession in the shack isn't an actual chivvers-type jelly then what an earth can it possibly be? It's a conundrum I'd like to solve before I shuffle off this mortal coil but it rather looks as though nobody knows. You would have thought that the Lomaxes would have asked about it when they had chance, but if they knew the answer it seems to have kept it to themselves.