Dextro Energy tablets were originally released in 1935 and rapidly gained popularity. They were the official competition food of the 1936 Olympics. The tablets are documented in several rations books along with similar products. If you like scho-ka-kola, then these are worth a try. They dissolve fairly quickly and have a slight bubble gum flavor.
They are brand new in their individual cellophane wrap bound together by a reproduction label based on an original example. The artwork was restored to eliminate flaws.