Maybe Coke could go back to only selling 6.5 oz bottles, like they did before the 50s.
Coke didn’t want to sell any size but 6.5 FL oz, but in the late 40’s they were getting clobbered by pepsi who were selling 12 oz bottles for the same price as cokes 6.5 oz. So coke starting bottling larger sizes to regain market share from pepsi.