After the shift away from large size currency in the late 1920s, the Bureau of Engraving and Printing produced sheets of 12 individual notes (“subjects”) until 1953, when 18-note sheets were introduced. In 1957 the BEP started printing 32-subject sheets, the standard for more than half a century. Fifty-subject sheets of $1 Federal Reserve Notes appeared in 2014, ten subjects down and five across. A new plate and position numbering system was implemented, distinguishing 50-subject sheet notes from their predecessors.
As discussed in a previous blog, the BEP sells uncut currency sheets as novelties/collector’s items. Fifty-note sheets were made available to the public in 2016.