Was used to create the smallest painting in the world: a copy of the Mona Lisa (or Mini Lisa). It is a just one third of the width of a human hair and here it is, a bit blurred but instantly recognisable:
My next painting is small but not that small! I photographed it next to a rose to give an idea of size. It is signed by P Pardo so I wonder if it was a little souvenir of a holiday in Spain or Italy. I could only find a Mexican footballer called Pavel Pardo or an Italian street artist called Progetto Pardo neither of whom fit the bill but here are photos anyway:
The work of the street artist, below.
Finally my little painting which I think only cost me 50p. What a gem.