UNIQUE: signed 'Eigen Druk' in pencil lower margin Catalogue raisonné: Bool #367 © The M.C. Escher Company B.V. This lovely image, which was one of Escher's most popular prints when he was alive, also depicts a reflection and calls into question what exactly it is that we are viewing. The two ripples in the water just before they collide are the only indication that the image is a reflection and not real tree branches on a full moonlit evening. And, of course, neither the branches nor the reflection are real, but merely the artist's rendering of what he has seen...