Only Three Graded with Blank Back! Graded POOR 1 by PSA. At the heart of Murderers' Row, the fearsome Lou Gehrig appears far more genteel on this extremely scarce 1926-1929 Exhibits Postcard variation. The "Iron Horse" is gloriously captured on this green tinted relic which displays only modest corner/edge wear. A small patch of front paper loss on Gehrig's left shoulder does not seriously impact this slugger's timeless presentation. Additionally, a slight crease along the lower right corner of the blank back does not break the surface. A classic Exhibit from the heyday of late-1920s Yankees dominance! Opening Bid $400.