Tombstone Silver Nugget Kilo. The Tombstone Silver Nugget. 1kg (1000 grams) Silver Bar. 32.15 Troy Ounces. 999 Pure Silver (Solid). No Two Items Alike. Comes with Bag & Certificate of Authenticity. Own a piece of the Old American West with a Silver Bar crafted in the historic nostalgia of the town Tombstone, Arizona. These 1 Kilo Pure. 999 Silver Bars are crafted to be unique and each one varies just a touch. Slightly different shapes, features, and personality. Included is a Certificate of Authenticity from the Scottsdale Mint and the bars also come with their own bag. Brand New 32.15 oz of. 999 Pure Silver Bullion Grade. For more pictures & full history. The most distinguished name in bullion. Track Page Views With. Auctiva’s FREE Counter.