Coin Testing

Arrian, Discourses of Epictetus 1.20.8-9 (tr. W.A. Oldfather): You all see in the matter of coinage, in which it is felt that we have some interest, how we have even invented an art, and how many means the tester employs to test the coinage—sight, touch, smell, finally hearing; he throws the denarius down and then listens to the sound, and is not satisfied with the sound it makes on a single test, but, as a result of his constant attention to the matter, he catches the tune, like a musician. ὁρᾶτε ἐπὶ τοῦ νομίσματος, ὅπου δοκεῖ τι εἶναι πρὸς ἡμᾶς, πῶς καὶ τέχνην ἐξευρήκαμεν καὶ ὅσοις ὁ ἀργυρογνώμων προσχρῆται πρὸς δοκιμασίαν τοῦ νομίσματος, τῇ ὄψει, τῇ ἁφῇ, τῇ ὀσφρασίᾳ, τὰ τελευταῖα τῇ ἀκοῇ· ῥίψας τὸ δηνάριον τῷ ψόφῳ προσέχει καὶ οὐχ ἅπαξ ἀρκεῖται ψοφήσαντος, ἀλλ' ὑπὸ τῆς πολλῆς προσοχῆς μουσικὸς γίνεται.