I'm not seeing any doubling. Bring the image into Paint and draw arrows directed toward the area in question. As far as the any die cracks go, I think what you're seeing is just the result of occluded gas between the plating and core.
I'm thinking it's either a minor die chip or - as previously mentioned - occluded gas between the Cu plating and Zn core.
What you are seeing is actually part of the design, although I do agree that the coin in general does have plating problems. Keep up the hunt!
i will post pics of die cracks when i get back home tonight.. from work i have a bunch i think 30 or 35 of them ..
