Issued: 2.10.2009
"On the block, produced in cooperation with the Portuguese Association for the Blind and Partially Sighted (Associação de Cegos e Amblíopes de Portugal – ACAPO), all the information appears repeated in Braille characters and on the limited space of the stamp, the word Braille can also be read in both types of characters. The remaining stamps of this issue are dedicated to each of the five senses, allowing for experiencing real physical interaction: the touch feels the embossed ink coming out of the tube; the smell receives the aroma of the cup of coffee; the sight detects holographic images on the spectacle lenses that change according to the position of the stamp; the taste identifies the flavour of vanilla on the glue of the stamp that shows an ice-cream; the ear is sensitive to the noise made by the file when you rub its rough surface." (you can read more here)
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