Hölscher in 1980 proposed that this monument was the base of the Bocchus Monument, so well known from literary descriptions (Plutarch, Marius 32, Sulla 6). The best discussion of the literary sources is Mackay. If this is true the statues on the top of this base would look something like this:
This coin was struck by Sulla’s son, Faustus and probably copied his father’s seal ring (cf. Marius 10, Sulla 3). So far so good by way of background. It has been suggested that the base is not the original base BUT was restored after Sulla’s return. The logic being that Marius would not have let such an offensive monument remain standing when he controlled the city. The two trophies of the relief are seen as representations of the Sullan trophies of Chaeronea (again see Mackay, link above), just like on this coin:
[There is also a regular denarius with the same design, but I am showing the aureus because it’s prettier.] This image is also associated with a Sullan seal ring by Crawford based on Dio 43.18.3 and the iconography is also seen on the Athenian New Style Tetradrachms (BM specimen):
Already Crawford brought in the Sant’Omobono relief into the discussion, with reference to the other block:
He sees an analogy between the two wreaths hanging out from the palm branch and the two trophies. I’m interested in same detail but because of how it echoes the iconographic strategy of a later coin type (Pompeian?).
Notice how the four wreaths hang from the palm branch to presumably symbolize multiple victories. And, NOW, as I type this and check my RRC entry for 436/1, I see that Crawford saw the exact same connection…. [Insert footsteps-of-giants sentiment here.]
Not everyone thinks the Sant’Omobono Reliefs are the Bocchus Monument. Detractors include: Hafner German. – Zu den vermeintlich sullanischen Waffenreliefs von S. Omobono. Rivista di archeologia 1989 XIII : 46-54 and Alexander Thein’s unpublished dissertation on Sulla of 2002. Another dissenting opinion is Reusser, C. 1993, Der Fidestempel auf dem Kapitol in Rom und seine Ausstattung: ein Beitrag zu den Ausgrabungen an der Via delMare und um das Kapitol 1926–1943, Rome, p. 121-37.
Santangelo gives a concise up-to-date survey of the literature and its conclusions (p. 2-3, n. 7), but also see his later discussion at p. 206.
Minor reference updates 27 August 2013 & 16 June 2014
2/15/2016 addition:
Flower, Art of Forgetting, p. 113:
Liv Mariah Yarrow 