2p late issues "diagonal slash" plate variety

 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.

2p "BNA" and "MRP" PERFINs

 This first specimen is not a late issue. I will have to look at more specimens to determine this paper correctly. At first glance, this stamp looks like a very rare 2p2D, the straight rays diffused paper of 1943.

I have not yet figured out how all of these outer scratches are arranged on any one of the plates.

This second specimen is a 2p1L6.

2p late issues "FC" PERFINs

Both specimens are 2p1L5z Zarate rust brown.

This second specimen is the "dot at top of blue between CA and AR of REPUBLICA ARGENTINA" common plate variety. There is also a trace of blue ink top right out of the frame. 

2p late issues "LR" and "CQ" PERFINs

Both specimens are 2p1L6.

This second specimen is the "dot at top of blue between CA and AR of REPUBLICA ARGENTINA" common plate variety.

2p late issues "Q" PERFINs

Both are 2p1L6.

A few 2p late issue (1951+) plate varieties (part 3)

For most of these I find at least two specimens.

Both specimens for this plate variety are 2p1L5z. It looks like a hair but I think it's a plate rack.

Both specimens for this next one are 2p1L5z.

Both of these specimens are 2p1L6.