Bottle with Coca-Cola in script on both shoulders and the bottom is typically called a "shoulder script." They are the newest of the straight sides - used just before the hobbleskirts. Pat is right on the money with the value.
"Why ya call it a 'triple script'?"Front and back shoulder plus the base? [8|] I think I had one from KY like that. Three scripts somewhere on it anyway and one was the base.
Triple scripts are usually used to describe Pepsi's with shoulder script, base script and script underneath. Not trying to be a smartass but that's the first time I've heard it used for a Coke.