Don't cry for Argentina - 03 e National Heroes - Series III : half centavo plate I

National Heroes, Series III "República" plate I

The first stamp to examinate is a 1/2 centavo blue.

1/2 centavo - series III

This stamp was printed on 3 different plates, each stamp can be appointed to one of those 3 plates.Now, plate one has 10 characteristics, plate two 20 specific marks, and plate three again 10 specific features.

First I will discuss plate one. When none of your stamps have one of those 10 specific marks, the stamp might be from plate 2 or plate 3.
Beware that (heavily) cancelled stamps might make it more difficult to assign.

10 variations for plate I

var 1.01: the oval under the OS of correos is interrupted and formed by dots, not by a full line
var 1.01: there is a 'hair' hanging from the first leg of the N in Argentina, towards the head

var 1.02 : the inner oval around the main figure, is interrupted at the hight of the O of correos
var 1.02 : there is a dot in the base line of the E of centavo

var 1.03 : a curvy line occurs above the CE of centavo,
var 1.03 : as well as a triangular mark in the baseline of the E in Medio.

var 1.04 : in the 2nd N of Argentinos, a " ~ " can be found
var 1.04 : on the right side, below the ornament  at the end of Argentinos, a kind of 'hook' is hanging

var 1.04

var 1.05 : diagonal lines are interrupted under the CO of correos (not touching the oval)
var 1.05 : the outer oval is not a line, but 4 dots under the EN of Argentina

var 1.06 : the inner oval is interrupted under the OS of correos and the AR of Argentina
var 1.06 : the inner oval is also interrupted at the right side of the image, above the shoulder

var 1.06

var 1.07 : in the upper right corner, a dot can be found within the 1 of 1/2var 1.07 : the inner oval, left of the shoulder is incomplete and looks like ....____....

var 1.07

var 1.08 : in the second O of Correos, the dark part in the O looks like a dot and a bean "-)"
var 1.08 : under the TI of Argentinos, the line is interrupted and it looks as there is a white dot

var 1.09 : there is a white dot above the AR of Argentinos, in the middle of the ornament
var 1.09 : the inner oval is also interrupted under the EO of correos and look like a set of dots

var 1.10 : the inner and middle oval is interrupted under the RG of Argentinos
var 1.10 : in the O of Centavo a dot is found on the left side of the base line

If you don't find any of the 10 variations on your copy of this 1/2 stamp, it might be a plate 2 or plate 3 stamp.  For plate one, each variation occurs equally (10 times).

to be continued ...