Kola Dallmann mit Lecithin energy drops tin. This contained small tablets of caffeine that you were just supposed to eat, like a piece of chocolate. A comfortable dose is 1 -2 pieces. It is in good condition with only light wear. This tin doesn't have anything definitive to date it. It could be wartime or postwar (most postwar tins tend to have prices in DM, but this tin has no price).