Nice pics. The error is not evident from your pic so it would not be a highly sought one. Typically, I see pricing for any doubled dies at 3 x greysheet bid if they are obvious or desirable and 2X bid if not. They are generally slow movers and dealers will sell them for anything over what bid is. The unknown in this analysis is that the coin is scarce as a date and in the grade. The few people collecting it may not care about the
DDO (or they might think it is neat and pay the extra for it). good luck, nice coin