Back before Coors went nationwide (and went way downhill at the same time), it was not pasturized. They would only ship it within one day's truck travel from Golden, Colorado. If I remember correctly, it then had a label on it that said something like drink within 14 days after[date]. However, a member of my unit in Vietnam had a 6-pack mailed to him and we drank it...warm...about 3 weeks after it left Denver. I haven't died yet, so I think you're ok.