Good call! Yeah, after our discussion last week I remembered that Roxxon had appeared (albeit indirectly) in the last Cap issue, too...
cap#7.jpg
...the people who framed Cap for murder were at this banquet. In the panels before and after this one Cap was discussing how "charlatans had claimed the (American) dream" (he's not wrong), thus the references in this panel to Roxxon, Hammer, etc. And that's Mayor Kingpin there at the podium. Lots of shady business going on. Could be a stylistic choice from the artist, could be intentional foreshadowing.