The dealer (cm.32x22.2)
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Ink pattern, white white lead and pencil traces, superimposed on a héliogravure base, the latter recognizable in lighter, uniform and tonal hatch areas (for example the lapels of the jacket). The héliogravure is a photographic technique used between 800 and 900, based on a photomechanical and chemical reproduction process by engraving on a copper or steel plate; the procedure allows a great variety of tones and nuances, and still remains the most faithful of the photomechanical techniques left to us by the photographic experimentation of the end of the 19th century. Besides having a strong dignity and an autonomous preciousness