Ko-chogin (silver bars which had been produced before 1601) were made by beating haifuki-gin, but they were brittle and easily cracked because of containing impure substance, and could not be made thin like gold and so chogin were in the shape of yuzuriha (Daphniphyllum macropodum) or in the pig style.
灰吹銀についても打ち延ばされ古丁銀が製作されたが、銀の場合は不純物などの関係から脆くひび割れ易いため金のように薄くは延ばせず、丁銀は譲葉状あるいはなまこ型のものとなった。