Roman marble portrait, perhaps of one of the “boy emperors” of the third century, CE. The Boston MFA suggests that the image, which depicts a teenage male, might represent the young emperor Elagabalus (r. 218-222) or Alexander Severus (r. 222-235).
Here the full bust, with the board-like fold across the chest, the “toga contabulata.”
C. C. Vermeule, Greek and Roman Sculpture in America (1981) pg. 354. cat. no. 305.