Book excerpt: One of the world's leading authorities on ancient bronze sculpture, Carol C. Mattusch urges us to discard the terms "Greek original" and "Roman copy" and to adopt instead terms that distinguish unique works from those produced in series and those produced as variations on a theme. She discusses the dating of bronzes based on criteria of technique and style, and considers technical innovations in the art of portraiture. Most controversially, she offers evidence that Greek artists cast bronzes in series based on a single model. Mattusch points out that examples of series castings can be found among the statuettes and vessel attachments from the Geometric and Orientalizing periods. From the Classical period onward, statues also appear to have been cast in series. Certain styles and types of images that achieved widespread popularity during the Hellenistic and Roman periods were produced in large quantities and in several different places. This book will raise important new questions in the field of Classical bronze sculpture. How long might a single model remain in use and how far might casts from it be transported for production? What is the significance of an artist's signature on a work in a series and what influence was wielded by the potential buyer? And, given these issues, what should the criteria be for distinguishing Greek works from Roman ones? Classical Bronzes is generously illustrated, including an eight-page color insert.