The 1997 Metal Universe Precious Metal Gems trading card featuring Erik Kramer of the Chicago Bears is a limited edition collectible with only 150 copies produced. Made of metal, this original sports trading card from SkyBox is a rare find for NFL fans looking to add a unique piece to their collection. The red parallel variety adds an extra element of interest to this vintage card from the 1997 season, making it a sought-after item for football card enthusiasts.