A 500 lei banknote, issued by Romania in 1991, in crisp circulated condition. No rips, tears or notable blemishes - please see pictures or email me for details. 

This note is, well, noteworthy for its picturing both front and back of famed Romanian sculptor Constantin Brâncuși. For more on Brancusi, read the following, per Wikipedia: 

Constantin Brâncuși; February 19, 1876 – March 16, 1957) was a Romanian sculptor, painter, and photographer who made his career in France. Considered one of the most influential sculptors of the 20th century and a pioneer of modernism, Brâncuși is called the patriarch of modern sculpture. As a child, he displayed an aptitude for carving wooden farm tools. Formal studies took him first to Bucharest, then to Munich, then to the École des Beaux-Arts in Paris from 1905 to 1907. His art emphasizes clean geometrical lines that balance forms inherent in his materials with the symbolic allusions of representational art. Brâncuși sought inspiration in non-European cultures as a source of primitive exoticism, as did Paul Gauguin, Pablo Picasso, André Derain, and others. However, other influences emerge from Romanian folk art traceable through Byzantine and Dionysian traditions.