I have dug a few but my wife has an uncle in New Orleans that digs the privys from the old shotgun homes that date back
to the 1700's.... I can tell you his museum is unbelievable! It would take all day to tell you the items he has found. Some of the interesting items are, clay pipes, beautiful decorative potty bowls, porcelan dolls, false teeth. Two of his best finds
were identical Ink bottles valued at about $5000 each.
Start Digging because like metal detecting you never know what you will find.
lLarry