?? red pump can??

I found several of these in an old print shop. Does anyone have an idea what they were used for? It obviously pumped some kind of liquid; maybe gas or diesel for cleaning up the press?
Mike

image: IMG00120-20120414-1503.jpg

IMG00120-20120414-1503.jpg

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probably a fire extinguisher from the fourties , not unlike a contained stirrup pump without the stirrup.