Walter Koenig is an American actor and screenwriter. He began acting professionally in the mid 1960s and quickly rose to prominence for his supporting role as Ensign Pavel Chekov in Star Trek: The Original Series (1967 1969). He went on to reprise this role in all seven original-cast Star Trek films. Walter Koenig has hand autographed this 3x5 Index Card. Beckett/BAS Encapsulated #00012556970.