Power your portfolio with realistic solid silver versions of these massive shells. Weighing 25 Troy Oz each and shipped individually in a box customized for simple storage or display, these are large enough to represent a significant investment and compact enough to be portable. The 25 Troy Oz Silver Bullet Bullion is a solid silver replica of the shell used in cannons. The 20mm cannon round is highly destructive and used in the Phalanx close-in weapons system, which serves as the last line of defense against cruise missiles, mortar, and artillery rounds.