Crowncap Manufacturer card
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Jeffco Manufacturing Company (JMC) | | Denver, CO. Manufactured Coors crowns from 1964-1976. Responsible for some Pepsi-Cola crowns as well. At least some Jeffco crowns appear to have been made by HC, which begs the question of whether they actually manufactured crowns at all or were a shell corporation that farmed out the work. It seems significant that JMC also stands for "Joseph M. Coors." | | Maker's Mark | |
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