Silver coins are the most popular way to protect against inflation and devaluation of the American Dollar.
It has been traditionally been the most reasonable valuable metal. Not like with Gold, Silver has exclusive properties, which make it a perfect and important venture for global industry. It creates a condition where there is merely no alternative.
Also, it has massive industrial applications. It is established in almost everything from phones to computers. As the world of technology continues to grow, so it creates a great demand for more silver.