Four items: two limited edition original red seat backs removed from Busch Stadium in St. Louis, numbered 4/10 and 7/10, both prominently signed in silver ink. Seats are mounted inside shadowboxes with images of McGwire’s 70th home run in 1998 to overall sizes of 38 x 24; DS, two pages, 7.5 x 9.5, May 30, 1991. Talent release allowing the use of a clip in which “Mr. Mark McGwire makes an unexpected appearance” on a program called “Super Bloopers & New Practical Jokes.” Nicely double-cloth-matted and framed with an image of his 70th home run to an overall size of 32 x 17; and a commemorative cover with a cachet honoring McGwire’s record of five home runs in two days, signed in black ballpoint. Gorgeously double-matted and framed with a photo, nameplate, and two pins to an overall size of 14.5 x 23.5. In overall fine condition. Seat backs are accompanied by certificates of authenticity from Steiner Sports. Oversized. RR Auction COA.