Folks Of Interest Anybody kow anything about this?

My son saw this in an antique store. I Googled the product and the company , but came up with nothing. Out of curiosity, anyone know anything about it? Thanks

 

Looks like some kind of snake oil.


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I'm thinking it was a pre-antifreeze additive since people used to use regular old hose water in cooling systems. He's trying to figure out what time frame it was used in