From the back of packaging:
The National Gallery, London, houses the National collection of paintings in the western Europe tradition from the 13th to the 19th centuries. This 3D lenticular jigsaw puzzle showcases "flowers in a vase" By Paul Theodor van Brussel, using striking three-dimensional effects. This puzzle has been uniquely crafted, combining the latest computer technology with specialist printing techniques, providing the highest quality 3D imagery of National Gallery masterpieces.