Next to the 20 Pesos and some of the "cents" issues, the 1 peso value presents the biggest challenge for plating. The stamp with map boundaries was issued in small quantites, and, as expected, does not have major plate varieties. The stamp without map boundaries saw extensive use. Surprisingly, the plates show little wear. Quick links to the plate varieties: main plate varieties page for 1P and for 1PL / Notch under last A of ARGENTINA / Smudge mid right in outer design / breaks to the outer top line / breaks to the left outer line / breaks to the bottom outer line / the background / a dirty printing

Here are quick links to the 1 Peso value with map boundaries, and the 1 Peso values without map boundaries: 1P1E / 1PNGR / 1PNOP / 1P2 / 1PCL