The Highland Mint coin depicts McGwire's 70th home run celebration. On September 27th, 1998 St. Louis pitcher Carl Pavano pitched a fast ball and mark hit the ball 370ft to left field. His stats were amazing that year! He averaged .299; hit 147 RBI's and hit 70 homeruns. This coin is limited to only 7,062 produced and a very low number of #01731. Its made of one troy ounce of .999 fine silver with reverse 24k gold plate and to protect your valuable it has a plastic casing so you may display it with the certificate of authenticity. Also included in this great deal is a very attractive black velvet box. This coin is in mint condition and will make an excellent addition to anyones collection!