For the reading of the rev. legend, see BMC, p. lxxiii. For the goddess, see GM, pp. 151-2. (Titus) Flavius Diomedes is known from inscriptions as a priest of the imperial cult in the late first and early second century (cf. IStratonikeia 171, 185, 183). See https://www.pretres-civiques.org/pretre/flavius-diomedès.