Edo period (1615-1868) or Meiji era (1868-1912), 19th century Comprising a copper nanakoji kozuka decorated with an eel in shakudo takazogan, the backplate shakudo migakiji, signed Kikuoka Mitsutomo and with the artist's kao; a copper ishimeji kozuka decorated with a crayfish in gold and shakudo takazogan, the backplate shakudo migakiji, signed Masayoshi and with a kao; a silver migakiji kozuka decorated with a snail on vines in low relief, inscribed Hamano Shozui; a shinchu ishimeji kozuka decorated with an eel and shells in shakudo takazogan; a shinchu ishimeji kozuka decorated with a crayfish among water weeds in iro-e takazogan and katakiribori, the backplate copper with a gold wash 3 7/8in (9.8cm) high, the largest