A similar silver-gilt lobed melon-form box and cover surmounted by a toad rather than a squirrel, of comparable small size (6.4 cm.), in the Freer Gallery of Art is illustrated in The Freer Gallery of Art: I China, Tokyo, 1971, no. 107 and by B. Gyllensvärd, "T'ang Gold and Silver", BMFEA, no. 29, Stockholm, 1957, pl. 11 (c).
A Technical Examination Report is available upon request.