Today is the 35th anniversary of the French government issuing a stamp in honour of my uncle, Mario Avati. Mario was one of a few artists who reinvigorated the mezzotint in the 20th century. We have some framed first day covers hanging at home. Pardon my crap photography.
More details on Mario here: http://rogallery.com/Avati_Mario/avati-biography.html
and mezzotints here: https://en.wikipedia.org/wiki/Mezzotint