This is the second most common plate variety I find. It is most likely present in every repeatable block of dies on the plate. I do not know what the size of the master plate is, but usually it is 2 rows by 5 columns for the large format values. This plate variety alone tells us that all of the late issues share the same plate since I find it on the cream frame printing of 1951 (2p1L), the rust brown 2p1L5z Zarate printing of 1956, and the 1957 2p1L6 printing.
