Ido' style bowls were made for everyday use in the 15th and 16th centuries during the Joseon period and 'goshomaru' style bowls were order made for the Japanese market.
「井戸」のように15-16世紀の朝鮮王朝時代の日常雑器だったものと、「御所丸」のように日本からの注文で作られたものとがある。