Umbra Loft Puzzle Ceramic Cameo Silhouette Bookends are a pair of modern sculptures designed by Alan Wisniewski. The abstract black design is made of matte ceramic and measures 8 inches in height and 6.5 inches in length. The bookends are part of the Alan Wisniewski Design collection and feature a puzzle-like silhouette. They are suitable for all occasions and are perfect for teens and adults. The bookends are not signed and are an original design from the 1990s.