Freshwater mussel and Japanese sun-and-moon mantelpiece Karasugai tsukihigai (title on object) A series of shells (series title) Kaitsukushi (series title on object), A Japanese mantle shell with a freshwater mussel and some seaweed. The sun and moon shell is red on the outside and white on the inside. With two poems, molluscs (shell, snail shell etc.), Totoya Hokkei (mentioned on object), Japan, 1821, paper, colour woodcut, h 210 mm ⊙ w 181 mm.