Wor­king for over two years as a graphic artist in one of Cracow’s adver­tising agen­cies, Dawicki had placed his microscopic self-​portrait on posters, leaflets and fol­ders com­mis­sioned by producers of heating equip­ment, medical and health products or heavy industry raw materials sup­pliers. All prints have been reproduced in thousands of copies and distributed accor­ding to their func­tion, while the hidden miniature artist’s face remained unnoticed.