I've seen many of these with a large number dated 1955 and later. They used to be called "cracked skull" errors by some and traded back in the 1960s for fifty cents each or so. There isn't much of an interest in them now. Maybe still worth 25 to 50 cents.
Premium on what, the die cracks? No. None at all. Unless you can come up with a clever name and market them really well and get a whole bunch of suckers to fall for it.
