It is always really helpful to include a picture.
I believe this is a "square" bitters, square body that is, amber. One sold on ebay in the past year for $250-ish
As with all bottles, the condition is super important and even minor issues affect value. Then there is color, clarity of color, etc.
Yes, mold errors can sometimes lead to greater value but in this case in my opinion, I do not see much if any upside for that extra letter A.