Silver coin values apply to many series of US coins. In certain ones, Washington quarters, Roosevelt dimes, it is used to value many of the coins. With other series, Mercury dimes, Walking Liberty halves, careful selection is necessary to avoid undervaluing some of your old silver coins. This app details exact silver coin prices down to the penny, these values are the result of taking the current spot price for silver and multiplying it by the silver content in the coin. US coins only sorry. The term "melt value" does not imply the melting of the coin, it's a definition of the coins intrinsic value or worth. Silver Commemoratives. 1920 PILGRIM 50C MS. The NGC Universal ID is a four digit alphanumeric that groups coins based on a unique combination of date, mintmark, denomination and striking process (MS, PF, or SP). These IDs are a simple organization of all coins prior to variety attribution and grading.