White slabbed envelope signed on the back in green ballpoint pen by Wings band members Paul McCartney, Denny Laine, and Denny Seiwell. Also included is the green ink pen used to sign, as well as accompanying photo proof of McCartney signing the envelope. In fine condition. Obtained in-person. Encapsulated and authenticated by Beckett/BAS (#00017547553). After the release of two solo albums by McCartney following the dissolution of the Beatles, Wings came to fruition, with the addition of Linda McCartney, a guitarist, and a drummer. Known for their eclecticism and frequent lineup changes, Wings was successful with albums such as "Band on the Run" and "Venus and Mars" the latter of which was aided by an enormous world-wide tour. Celebrate a historical moment in the world of music after the Beatles era, as soft rock and pop changed with each new artist joining the industry with this band-signed item.