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Two little girls in white dresses play around a large advertising bottle for 'Hunyadi János Bittersalzquelle', with a portrait of a man on the label and the text 'Gesetzlicher Markenschutz'. On the reverse, the address is directed to 'M. Leopold Gresp, clerk of telegraph posts, Coulours / M', with the note 'Affranchir à 10 cent.' and a Hungarian 5 pengő postage stamp. The handwritten message says 'Sou haïts !!!' followed by a signature.