1977 10C Roosevelt Dime ~ NGC Mint Error MS63 Obverse Clad Layer Missing (1.9g)

A 1977 10C (dime) with a mint error featuring a missing obverse clad layer is an interesting coin to consider for collectors. Mint errors like this occur during the coin production process and can significantly increase a coin's value depending on its rarity and condition. 

The obverse clad layer missing means that the outer layers of the coin, which are typically composed of a copper-nickel alloy, did not properly bind to the core during minting. This results in a visible defect that is sought after by error coin collectors. The weight you provided (1.9g) suggests the coin may not have the standard weight of a typical 10C, which is approximately 2.268 grams, further indicating an error.