Old Wet Cell Jar
I found the following wet cell battery (and like 8-9 more of them) in my family's old estate.
They seem to be for a vintage farm lighting system. Lid cover says "Eveready" but I haven't been able to figure out the approximate period or find a similar model online.
The metal planks are corroded but the isolation system between them is planks of wood, which should make them fairly old...