As to the papers there is only the variety within the symmetrical paper mesh plus orthogonal watermark [Zárate paper "granulado"] as to whether the rhomboid indents have a preference to appear at the front or at the back or at both sides of the stamp!
In all 3 stamps we have the scarce variant of a horizontal direction of paper [eje de enrolllamiento] resulting in the line of AЯ running parallel to the long side of the stamp!!!!!
Plate flaws should be present but so far I have come up with the "scratch from under his nose":
to be continued ...
