For two related oblong polylobed vessels see nos. 30-31 in A. Gunter and P. Jett, Ancient Iranian Metalwork in the Arthur M. Sackler Gallery and the Freer Gallery of Art.
The shape's popularity extended beyond the Sasanian empire, with examples found to the East, from Sogdian cities in Central Asia to treasuries in Japan. A similar eight-lobed gilt-silver vessel was found in a hoard at Datong in Northern China, buried in 493 A.D. (see pl. 149 in Cultural Relics Unearthed in China, 1972.). According to Gunter and Jett (pp. 182-183, op. cit), the Datong dish shows a decorative motif characteristic of Indian art, indicating its possible manufacture in India or Pakistan. While scholars disagree on the origin of the shape, there is a clear sharing of artistic traditions from the late 5th century A.D. onward.