Jack Daniel’s Sour Mash – White Label Generation 1–4 For sale is a Jack Daniel’s Sour Mash White Label Generation 1–4 set. These bottles represent the different historical stages of the White Label design and are highly sought after by collectors. The bottles are in good collector’s condition and make a great addition to any Jack Daniel’s collection or a unique gift for whiskey enthusiasts. • Jack Daniel’s Sour Mash • White Label Generations 1–4 • Rare collector bottles • Ideal for collectors and whiskey fans Private sale.