IBANEZ DOUBLE SOUND  WAH-FUZZ

MADE IN JAPAN 1979 BY MAXON These units are incredibly rare

http://www.youtube.com/watch?v=ZsTM6x51IHc

http://www.youtube.com/watch?v=n2cjkISfTkg

http://www.youtube.com/watch?v=HoZ5gqJ7Fy0