I forgot to mention that as I was grubbing through the plastic tub and found the two JD lids, I found a small, old cannon? howitzer? shell.
It was about 8" long and 2" across. It seemed kinda heavy, and I took a look at the back end. That sucker had not (I repeat NOT) been fired.
I gave it to the owner, but I should have looked it over more closely. It had a blunt end and was a rimfire. It looked a lot like a giant .22 short.
I could kick myself for not checking it for writing or other ID.
Wonder where it is now....