The relief of Mithra slaying the bull from Apulum, Romania, has been missing until the scholar Csaba Szabó identified it in the diposit of the Arad Museum.
This monument bears an inscription by a certain Lucius Aelius Hylas, in which he associates Sol Invictus with Jupiter.
TNMM642 – CIMRM 2006, 2007
Io(vi) S(oli) invi(cto) / deo genitori / r(upe) n(ato).
L. Aeli(us) Hylas (vicesimarius) l(ibertus) pr(o) sa(lute) et Horientis (sic) fil(ii) sui et Apuleia(e) eius signum numinis cum absidata / ex v…