Note 777 — Chapter V · Lydia
Reading edition
Ridgeway, Orig. Metallic Currency, pp. 35 f., 44, 82, 128, 242, 399 f.; Babelon, Origines, chap. II. The rings appear not to have always a fixed weight, but the ring, especially if not closed, is a very convenient form for weighing, v. Bergmann, Num. Zeits. 1872, pp. 172–4.