Blanton's Silver Single Barrel, initially created for the Duty-Free market, is a very rare, higher-strength Blanton's, bottled at 98-proof, which is now almost impossible to come by. Although it is smooth and delicious, it is no longer in production, making it a sought-after whiskey for collectors. So, if you're lucky enough to spot it during your travels, keep your eyes peeled and don't hesitate to add it to your collection.