Vitellius Emperor?

[Caballo]

"the beautiful (or honourable) silver insignia on their arms.....Insignia could mean indications of rank, but again here is more likely to mean military decorations" Or perhaps silver/ gold torques or bracelets worn on the arm?

For example, from Corinium Museum


This is not the only example- from the on-line Corinium write up of this exhibit
"This is a well-carved fragment; the hand is approximately half-size and grasps the shaft of a lance cut square rather than round; on the wrist is a band circa 0.015 m. to 0.02 m. wide with turned-over terminals. Griffiths has noted a similar feature on the tombstone of the trooper, T. Flavius Bassus, of the Ala Noricorum, who was buried at Cologne, and also on that of the centurion M. Caelius of Legio XVIII, who wears a broad band on both bare wrists (no doubt hinged at the back). The Aquilifer Cn. Musius, of Legio XIV Gemina, is shown on his stele at Mainz with a band of four ridges fastened to the wrist of his right arm only. Finally there are faint indications of a band on the right wrist of Flavius, standard bearer of the Ala Petriana, whose tombstone is in Hexham Abbey. As all these wrist-bands are different, it must be presumed that they were personal items and not normal equipment. They would have provided protection to the inner side of the wrist where the blood-vessels are near the surface and therefore vulnerable to sword cuts."