The smooth edge on the Washington Dollar is a error - The dollar got thru the system by missing the edging process, The Mint said that they will take every step to make sure this does not happen again.

The smooth edge on the Adams Dollar is also an error, and the double lettering, both lettering same direction and lettering in opposite directions are errors.

The Dollars according to the Mint, are Minted, then the Letter Edge is done in a separate process, and the position of the lettering can be at any position on the Dollar, and the lettering can be upside down or rightside up, the Mint states the Proof Dollars will have the lettering done at the same time of minting and would be rightside up and the position would be the same on all Proofs.

The E-Bay sellers trying to say the lettering on Business Strikes being upside down as an "Error" is Wrong, Don't be taken by this - buy a roll or two from your local bank and check it out, there are as many rightside up as upside down.

Have a safe buying day.