FS Electric locomotive E.636.003, with body rebuilt as second series, Isabella brown livery, assigned to the D.L. Florence and transmission ratio for passenger trains, ep.IV. Decoder socket MTC21 with sound preparation. DCC Sound version art. 69433. Electric locomotive E.636.003, with body rebuilt as second series, "castano/Isabella" livery, assigned to the D.L. Florence and transmission ratio for passenger trains.