This second century object mentions the Ninth Legion and is one piece of evidence that this unit existed after 117 (Valkhof, Nijmegen)
Opinions are immune to facts, and the notorious hoax that the Ninth Legion Hispana was destroyed during a Caledonian insurrection in c.117 has recently resurfaced. (Thanks Hollywood.) I have already discussed this in my series on common errors (here) and will not repeat myself; I merely refer to the fact that Duncan Campbell‘s excellent treatment of the evidence, “The fate of the Ninth“, can now be downloaded. It originally appeared in Ancient Warfare 4.5 (2010) 48-53.
A comparable online publication is P.J. Sijpestijn, “Die Legio Nona Hispana in Nimwegen“, in Zeitschrift für Papyrologie und Epigraphik 111 (1996) 281-282.