A major monument of Korean Buddhist sculpture, National Treasure no. 78, is usually dated to the late 6th century. The figure incorporates the style of the Eastern Wei. Although the style employed is archaic, X-ray studies of the statue, suggests that it is the younger of the two because of the sophistication of the casting, the bronze being no thicker than one centimeter, the rarity of air bubbles, and the high quality metal. Some scholars have used the evidence of the x-ray photos to suggest a later date for the treasure. Generally, scholars believe that the image was cast in Silla based on the fact that there were several anecdotal stories stating that the Japanese man who rediscovered the image had found them in the ruins of a temple in what was once Silla. Professor Woo-bang Kang has argued that the statue was made in Goguryeo, who he believes was the only state technologically capable of casting the image, and was at one point brought to the south. National Treasure no. 78 could also be a Baekje image because the Baekje kingdom probably had sufficient casting expertise by the late 6th century and several bodhisattva images associated with Baekje, particularly one in the collection of the Tokyo National Museum (image), bear stylistic resemblances to the treasure.