Own a piece of your Mariners' hallowed ground! This unique minted coin keychain has infield dirt from your favorite team's stadium embedded in the center! Each is labeled with a numbered MLB authentication hologram confirming the infield dirt was retrieved from the stadium and embedded in the coin under the watchful eye of an MLB representative. The other side of the keychain is minted with your favorite team's stadium. It's delivered in a custom clamshell package and is officially licensed by Major League Baseball.