5p1E on cover from the Jantzen correspondence
I have two of these covers, both with 5 pesos stamps. The other cover is posted in 1936. This one is posted in May of 1938.
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/201003/201003-covers/other/BOOK37-01.jpg]
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/201003/201003-covers/other/BOOK37-01-st1.jpg]
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/201003/201003-covers/other/BOOK37-01-st2.jpg]