VERY rare full-name signature-- instead of the usual "Groucho"-- in pencil on a 4.5 x 5.5-inch light blue autograph album page, acquired in-person in 1938, the year the madcap comic actor starred in R.K.O.'s Room Service. Some toning in spots; otherwise, in good condition and accompanied by a J.S.A. third-party authentication certificate.