2oolhound! It's been too long since I had something interesting or worthy of reporting, which all changed today at my flea market this morning.
Frankly, I'm not sure what I have here, but I have a couple instinctive guesses.
The collar on the brass spout is marked with the name of a well-known oil can maker,
GEM MFG. CO. and
PITTSBURGH, PA. As a WWII collector, I have had many of their spring steel bottom cans, 4 inches wide, with straight 4 inch spouts. There was a holder for them in the engine compartment, under the hood, of every WWII jeep. But those later cans were sleeker, not as tall or as bulbous as this one.
The can, which was copperized at one time, but shed most of that thin skin a long time ago (you can see some of it around the lip, and on the bottom), has a completely different marking. Around the top of the can, in two concentric circles, it's marked,
* THE AMERICAN TUBE & STAMPING CO, BRIDGEPORT, CONN. * MAKERS HOT & COLD ROLLED STAMPING STEEL *
I had never heard of American Tube & Stamping so I did some searching. This is from page 441 of the 1910 American Trade Index.
One possibility is that the two pieces are from two different oilers, the Gem spout misplaced from its can, the American Tube & Stamping can missing its spout. But anyone who collects vintage oil cans knows that not many of them are interchangeable. They didn't all use the same threads. Gem and Eagle, for example, two of the biggest WWII suppliers, will not work with each other.
I think the other possibility is American and Gem having some kind of partnership. But that's a little wonky, too. Why not mark both pieces the same to prevent brand confusion?
The spout is one of those pressure-spring release jobbies. You have to depress the tip by hand or by pushing the tip or that lip against what you're oiling to compress the spring inside the can allowing oil to flow from the can through the spout. When the spout is not pushed, the spring is closed, and it's spill-free.
On top of everything else that's odd about it, the can has also been repaired with crude brazing a few times.