Lou Gehrig 1926-29 Exhibit portrait postcard. PSA Graded 5 EX. Here we find a jovial Gehrig pictured during the prime of his career. A minor corner fault on the lower left corner keeps this one from attaining a higher grade. Beautiful card with a very crisp image. PSA and SGC together have graded only 28 copies of this postcard, with a mere three achieving a higher grade.