This is the first one of these I've ever seen. Usually there is a round blob on top or nothing at all. Wonder if this letter A is what those round blobs were supposed to be but just didn't come out right? Or more likely could it be only a few were done with the extra A and then the round blob is a blot out from there on? Still has the A on the skirt. Rather redundant. The guide I have is from 2011 and wasn't listed. Is this a scarce embossing variant?