I believe this is doubled. Please correct me if it isn't and let me know if it is doubled or machine doubled. Or something else.
I kind of wonder about that too. The only thing that gets me is that it is not only on the outside of the letters B and R. It is also in the middle and the edges as well. Also I'll the way around the E. I know you can't see all the details because of the lighting, but it is on the inside and around the outer edges.
That is exactly why I suspect that it is die deterioration. "It's everywhere! It's everywhere!" Chris