Antoninus Pius - Annona interesting coin! (1090)

The legend seems to be TRP XIX that is not recorded in RIC, judge yoursef!
Antoninus Pius AR Denarius. Rome, AD 144-148. ANTONINVS AVG PIVS PP TRP XII (or XIX), laureate head right / COS IIII, Annona standing left before modius filled with corn ears, holding two corn ears and anchor. RIC 175. 3.32 g, 18mm, Very Fine+