Lid rest in the shape of a crab

Futaoki, or lid rests, are used in tea ceremonies as rests to put the teakettle lid of the water ladle. They are made of various shapes and materials.
This crab-shaped lid rest is made of copper. It is one of seven kinds of lid rests, which are: ‘lids resembling an incense burner’, ‘tripod’, ‘tre-foiled shape’, ‘a man looking into a well’, ‘turban shell’, ‘three human figures’, and ‘crab’. These lid rests were selected by Sen no Rikyu, a great tea master in the 16th century.