Plain Edge, Ridiculous. They also found a new error on the Adams Dollar, could this one actually be worth something?

The Presidental Dollars are starting to get out of control. People are paying extra money because the coins don't have letting on the the edges of the rim(PLain Edge). This just another one of those trends where the coins get to out of control and there are so many out there that people won't care about them anymore and they won't be worth any money. They found a few problems with the Washington Dollars and they already found two "errors" with the Adams Dollar. The first "error" they found on in the Adams Dollar was the Plain Edge. The second one they just found. On the rim of the coin is the date and the mint mark shouldn't be before the date. Well that is what they found the letter P before the date. It looks like this "P2007". Could this error actually be worth something? Only time will tell.