To print this value two plates have been used, one prepared by Masini and the second one by De Masa, the stamps made with the second plate appeared from mid January 1859. Some details allow for the identification of the proper plate. Other minor details allow in addition for the identification of the group (right or left) from which the samples are coming. This last point, quite technical, will not be dealt here in detail: in the "Bibliography " section some suggested work is listed for the people who desires to continue the study.
Fig. 1: 1st plate
Fig. 2: 2nd plate
1st PLATE (Fig. 1)
In the lower margin is visible a horizontal color line.
Printing is often pale, on the pink shade and not so much visible.
2nd PLATE (Fig. 2)
In the upper margin a color line is clearly visible, while is not present in the lower one that is totally white.
The labels are generally more in evidence.
Colors are brighter than in the first plate tending towards carmine and printing results more visible.
Catalogued color shades (as per Sassone) - 1st plate
Lilac pink (typical color)
Catalogued color shades (as per Sassone) - 2nd plate
Carmine pink (typical color)