Bonjour,
C'est un antoninien de Salonine, au revers PIETAS AVGG :
Rome 256-257,
RIC 35, Göbl 229b
SALONINA AVG, diademed and draped bust right on crescent
PIETAS AVGG, Salonina seated left, reaching down to two children standing before her, a third child at her side. (Valerian II, Saloninus and Gallienus Junior). .