I've just been re-reading Michael Peachin's paper about the post of procurator monetae (PM) in the 1986 Numismatic Chronicle. In it he catalogues the names of the post holders, where known and tries to put them into a chronological context.
It is suggested that within the Roman minting system there was only a single PM until the fourth century AD, even though there were a number of provincial mints striking Roman coins by the third century.
An inscription is recorded from Rome that lists an un-named individual as having the titles:
praefectus alae Indianae
praefectus vehiculorum per Gallias
procurator monetae Trivericae
praeses provinciae Germaniae superioris
The interesting title is the third one, PM Trivericae, procurator at Trier, a provincial mint! Is this the Gallic Empire mint or the mint of Diocletian and his later colleagues?
It is suggested that this is the Gallic mint because the post holder was praeses of Germania Superior, a province that changed name to Germania Prima around the Diocletianic reform, c.294-6. There is a slight chance that, as Trier was operating as a mint briefly before the Diocletianic reform, that the inscription is late rather than mid to late third century.
If this is the Gallic Empire minto official, because he is the procurator of the mint at Trier it suggests that Trier was the primary mint. Also, given the pardon of Tetricus and his son it would appear that the officials of the Gallic regime may have had a rehabilitation as this officer's career continues at a high level after the fall of the Gallic regime and is reference on an inscription from Rome itself, rather than the provinces.
