The item was successfully added to the shopping cart. View Cart #CC191 - Coca Cola "Refreshing Secret" Carton Insert Vintage 5 3/4" tall fold out pamphlet Coca Cola carton insert. Six sided with a lady on the inside telling you about how Coca-Cola contained "80 quick-energy calories" and compares that to apples, oranges and other things people considered healthy at the time. They call it the "refreshing secret". The last copyright on the pamphlet is 1951 and they are from around that period. These are neat. We just bought part of a huge collection of Coke items. These were part of the lot. The fellow that had this stuff is a friend who searched old bottling plants and hauled most of this stuff out many years ago. $1.50 -+