Watch List notes:

Libius Severus (461-465). AE Nummus, Rome mint, issued under Ricimer. Obv. Traces of bust right. Rev. Monogram of Ricimer within wreath. RIC X, 2715. AE. g. 0.82 mm. 9.00 R. Rare. Exceptionally sharp monogram, perfectly centred. Fair/VF. In November of 461, Ricimer proclaimed Libius Severus emperor at Ravenna, and other than the fact that he was a native of Lucania, nothing else is known. He was little more than a puppet, as evidenced by some of his nummi such as this one with Ricimer's monogram as the reverse type. Severus died in 465, presumably of natural causes, which was quite a remarkable achievement during the final thirty years of the Western Roman empire.
(CNG 56,180).