Regarding John Sallay's query, I can point out that the French medal he cites does date from 1717; it is described in this book published in 1724. The motto on the medal: "accipe quae peragenda prius", learn what is first to be accomplished (before reaching the temple), is from Virgil's Aeneid 6:136.

The original design, Minerva showing the temple of glory to young Louis XV, is by Antoine Coypel (1661-1722), and was engraved by Pierre Drevet, although the motto that accompanies the engraving ("tali se dea jactat alumno", the goddess prides herself in such a pupil) was used on another medal commemorating the education of Louis XV.