11.8cm by 8.9cm by 4.6cm.
Gold, silver and aokin flat makie with cut-gold foil replicate the clam’s texture on the lid. The body has a gold ground, while the interior and base have a pear-skin ground. On the protuberance of the shell’s joint is a motif resembling chrysanthemum petals, which have worn down through use. Under the cover is an almost illegible, encoded inscription in ink.
The 1835 Burghley Inventory records: “Japan Closet, Japan in the Glass case opposite the door(s), sic, A Shell shaped Box Gold Japan”.
The box was exhibited in the 2008 exhibition: ‘Export Lacquer: Reflection of the West in Black & Gold Makie.’ at Kyoto Museum & the Suntory Museum, Tokyo.