1.5" with redtone large question mark printed below the question in red "Who Is The Phantom Of The West?" At center is a human head with no facial details other than tiny eyes looking out of a mask. In the bkg. a group of riders chase a single rider on horseback. This was Mascot's second all-talking serial and has the names of the stars printed below: "Tom Tyler, William Desmond, Philo McCullough, Dorothy Gulliver, Kermit Maynard (later Ken), Tom Santschi, Joe Bonomo." No backpaper as issued but with Bastian name on the curl. Light and typical surface wear under magnification but Exc. and displays Mint. One of about a half dozen we've seen over the decades.