Coke Can Dating

I was exploring my house's crawlspace (the shallow, unfinished space beneath the living space used for visual inspection and access to pipes and ducts), and found this old coke can lying there. There's no date on the can, but assuming it was left there when the house was constructed, I'd say it's from the late 1970's. The list of ingredients corroborate this: it has sugar instead of high fructose corn syrup, which means it's from before 1985, when Coke made the switch.