Pierre-Auguste Renoir - Nud In Peisaj

Nud In Peisaj - Pierre-Auguste Renoir (1841-1919) 

Romanian Stamp issued 1976, Painting Completed 1905

Zambaccian Museum, Bucharest

Another impressionism stamp...  this is one of a series of large format stamps that were issued by Romania in the 1970s, and this painting is also held in Romania.  Renoir was key to the development of the impressionism movements in the late 19th century, along with Monet, Pissarro, Sisley, Berthe Morisot, Bazille and others.