The second early 6th-century image is a single mandorla triad, a Buddha image flanked by two bodhisattvas who are grouped standing in front of a single halo from the Korean Central History Museum in Pyongyang, North Korea. This image has an inscription on the back of the mandorla that scholars have interpreted to mean 539. Of the three images from the early 6th century mentioned, this North Korean image is the most sophisticated in its modeling of the Buddha and attendants. A famous triad from the Gansong Art Museum nearly identical to the North Korean triad is usually attributed to the Goguryeo Kingdom and is typically dated to 563, showing that styles from 539 were still popular more than two decades later. Finally, some scholars suggest that a mandorla excavated in North Chungcheong Province should be dated to 536.