EDIT: I was wrong, sorry. I got the wrong impression from the podcast.
Throughout the relevant 70 year timespan, Coke was priced in an environment of first, the gold standard, and second, Bretton Woods.
The USD was not fully disconnected from gold until 1971, which is after the timespan the article talks about.
As for the "scare quotes", I'm aware of the drawbacks of fiat money, but it's still money. Gold is just non-fiat money.