This issue - consisting of five stamps and a block with a sixth stamp - is a consequence of a proposal made by the Universal Postal Union to celebrate the birth bicentenary of Louis Braille (1809-1852), the inventor of a system that combines embossed dots and which is applied to reading, writing, calculation and music for the blind.
The five 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.
