This lithograph, Boy with Lamb, is based on a painting by Picasso as translated into the lithographic medium by Picasso's lithographer Henri Deschamps (1898-1990). 

Deschamps was a master printer at the Mourlot Atelier and worked with Picasso in printing his lithographs since 1945.

The Mourlot stamp and seal of SPADEM, the authorizing body governing the Picasso estate are on the print.  It was printed at Mourlot in 1991 on Arches paper.