Satin-finish 20 x 16 photo of Joe Greene, Ernie Holmes, Dwight White, and L. C. Greenwood sitting on the sideline, signed in silver ink by all four members of the famed ‘Steel Curtain’ defense. Double matted to an overall size of 24 x 20. In very fine condition. Auction LOA Steve Grad/PSA/DNA and R&R COA.