There are three dots in that area. There should be four 6's on the bill as well. It looks like the top loop of the second 6 on the right is on the bottom edge of the bill.
Not a BEP error. 3rd printing includes Treasury and FRB seals as well as serial numbers. This is a note altered after FRB release to appear as an error. It is only worth one dollar.
Looks good to me. The green and black overprints are printed separately and can be shifted independent of one another. It's called a misaligned overprint of one color. Even though there's some residue from the federal reserve bank seal, you can see that the points near the top of the shifted seal are hollow. They seem to match up to the dots that were left in the normal position. I'm not sure how that would have happened.
And you can also see the top of the right-hand '6' in its normal position, too. It looks like the sheet shifted out of alignment *just* as the overprint was reaching this note.... That would also explain why the '6' from the note above doesn't appear in the upper margin of this note. I've seen several of these misaligned-black-overprint errors that share all of these features, so apparently a sheet that gets misaligned at exactly this moment is not as unlikely as it sounds.
It appears as though I passed along some bad info. Sorry. But I did learn something new because of this thread. Thanks.