Two 20 pesos blocks
The appeal of these high value blocks is unmistakable. Such a high face value was most likely paid for a post office box receipt.
This block is a 20p1E4.
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/200910/hv-blocks/other/20p1E4.jpg]
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/200910/hv-blocks/other/20p1E4-b.jpg]
This block is a 20pNGR.
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/200910/hv-blocks/other/20pNGR.jpg]
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/200910/hv-blocks/other/20pNGR-b.jpg]
The upper right stamp has a small indentation below the '20.'
[Blockierte Grafik: http://www.somestamps.com/images-arg3551/reference-collection/foro/200910/hv-blocks/other/20pNGR-UR-pv-det.jpg]