70 years without inflation

The story of Coke's humble beginnings is fascinating:

Prices change; that's fundamental to how economies work.
And yet: In 1886, a bottle of Coke cost a nickel. It was also a nickel in 1900, 1915 and 1930. In fact, 70 years after the first Coke was sold, you could still buy a bottle for a nickel.