My father started stripping the one of the left down last night and found it is stamped on the front Cox...and couldn't make out any other letters because the paint is so thick on these things. So Yes I believe it is a Eco Meter on a Coxwell base. So once blasted Maybe we can find some numbers on this piece.

Always looking for Mint oil cans. Esp Aviation and Outboard Oil Cans and pumps. Looking fot Cheerwine signs!