Pioneering English rock band active from 1968 to 1973; Kossoff, the lead guitarist, passed away in 1976 at age 25 due to drug-related heart problems. Vintage ballpoint signatures of Paul Rodgers, Paul Kossoff, Andy Fraser, and Simon Kirke on an off-white 9.5 x 6.75 envelope with the band's name drawn in bubble letters on the flap. In fine condition, with light scattered creases and soiling. Accompanied by a full letter of authenticity from REAL.