Lewis Short
(adjective) : sextantārĭus, a, um, id.
* Containing a sextans asses, i. e. worth only the sixth part of the former asses (put in circulation after the second Punic war), Plin. 33, 3, 13, § 44; Fest. p. 347 Müll.
Charlton T. Lewis, Charles Short, A Latin Dictionary