Just like the scene in Miracle on 34th street when the letters addressed to Santa Claus were sent to the courthouse, this letter was sent simply to "Baseball's Iron Man" and amazingly got to its intended recipient, Lou Gehrig. The Iron Horse did indeed sign the envelope, which reads "Slit Envelope" on the back. Gehrig earned his "iron" nickname due to his incredible durability. His consecutive games played record of 2,130 stood for 56 years and was long considered unbreakable until Cal Ripken, Jr. surpassed it in 1995. Gehrig's streak ended because he voluntarily pulled himself from the Yankees lineup as he was dealing with what is now commonly referred to as Lou Gehrig's disease. Gehrig's signature on the envelope rates a perfect 10 PSA autograph grade, and the envelope has been slabbed by PSA. Comes with a letter from JSA as well. It reads "Best Wishes John, Lou Gehrig" in the top left corner. An exceptional specimen for any Johns out there and even those that can't make the spurious claim that the message was actually intended for them.