The Steel Curtain was the nickname given to the front four of the famous defensive line of the Pittsburgh Steelers during their 1970s dynasty years. This defense was the backbone of the Steelers dynasty, which won 4 Super Bowls (IX, X, XIII, and XIV). This is a hand autographed Pittsburgh Steelers Steel Curtain B&W Chromium 16x20 Photo. 4 Autographs include: Joe Greene, Dwight White (deceased), Ernie Holmes (deceased), and LC Greenwood (deceased). Bold Silver Full Signatures. New, Custom Black Frame with White Mat. Beckett Authentication Signature Review Order ID #97419 and Review Order Item ID #117500. Also includes Hot Corner Sports Inc. Certificate of Authenticity from the original signing. Image of actual item in stock - as shown