Note 191 — Chapter VII
Reading edition
The T'ao lu, bk. ix., fol. 13, quotes from T'ang shih ssŭ k'ao the following passage which bears on this point: "The Ting and Ju ware used by the Court generally have a copper band on the mouth. This was regarded as destroying their value. But modern collectors of Ting and Ju wares have come to regard the copper band on the mouth as a sign of genuineness. Dealers in curios declare it to be a sign of age."