What causes this is not the die being filled. If the die were filled on the mint mark, it would be shorter. Lower profiled. But the reason the center is filled is because part of the post, the upper part (which is the tip of the post, had broken off. This post make the inside portion of the mint mark 'D'. Because of the partial break of the post, the lower part still forms the center, but not as deep as it did in the beginning.


This applies to the internal centers of the other devices as well as illustrated above. Hope this helps. So it is not a filled die issue, but a broken post issue.


This applies to the internal centers of the other devices as well as illustrated above. Hope this helps. So it is not a filled die issue, but a broken post issue.























