I finally choosed to follow Gilljam and attribute the mint to mainz. In doubt i wrote ''undetermined mint, Mainz or Trier''.
i let here a link to the offline page of my database, about an error for VIRTVS MILITVM: https://www.all-your-coins.com/en/archives-anciennes/romaines-imperiales/virtvs-militvm
see comments. You are welcome to submit me your comments or maybe english language errors.. im french and traduce by myself