You know an interesting fact about the Notes that actually bear the Federal Reserve Bank seal is that there is not two separate distinct borders. Look at any one dollar note. Some of the older notes that bear the FRB seal have same layout - open space.
The open space is similar to the note that you, Carl, show. but look at any note with the Federal Reserve System seal - 5, 10, 20, 50, 100 there are two separate distinct spaces. borders and boundaries.
January 21, 1971