Article 31: Jefferson Memorial U.S.A. Priority Mail

The 2003 printing is sometimes found with significant shifts between the red and blue colors, as shown below. The specimen to the left has noticeable vertical shifting when compared to the specimen on the right, which does not show significant shifting. Here are quick links to a page dedicated to design details, as well as a page with postmarks and cancellers.
To the right is yet another example of shifting. In this case, the shift has a diagonal component. Notice the light blue edge is thicker on the bottom edge than on the right edge.
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