Golden magical ring from the Castellani Collection

The golden ring in the Coll. G. Schlumberger in REG. V 1892, 85ff and fig. (Coll. Alessandro Castellani, Roma 1884, 119 No. 920; G. Schlumberger in REG 1892, 85ff with fig. and in Mél. d’archéologie byzantine (S. 1) 1895, 136f), considered as Mithraic by Cumont (MMM II 452 No. 14 and fig. 106) is an amulet against colic and diseases of the uterus. Drexler in Philologus LVIII, 1899, 608ff; cf. Marcellus Empiricus, De medicamentis, Cap. 28 (23) reads: μίτρα (= μήτρα) ἔπαcγε · θεὸς κελεύω or κελεύει μὴ [κ]ύειν πόνους κόλον.