I see these on eBay all the time with ridiculous asking prices. They shouldn't really have a high premium. It's just a worn die issue that causes that die break in the mouth area. It's neat but nothing really major.
Not even close, Slabbing the coin is more than it is worth. These are $1 to $5 dollars at the most. PCGS will cost you 35 to 50. Most coins are a waste of time and money to slab.