Gmom's Caul

While I was looking through some of gmom's possessions I found a jar with a preserved caul?? I didn't know people still kept these!

It is said that it brought good luck when removed and preserved back in the day, but I'm not sure of a use for it now. Maybe it was related to their expeditions for good luck.

Would anyone be willing to take it, or should I just put a ring of salt around it?