On the BEATA type, Constantine II is usually depicted holding a mappa in his left hand, sometimes though he seems to hold nothing. On this example, however, he is holding a globe, though it is somewhat awkwardly positioned. I can't recall noticing something like this before, but maybe I did not pay enough attention. Perhaps another example of artistic license on the part of the engraver. There are examples that have Constantine II giving the Imperial gesture, raised up in a salute, with the right hand while holding a globe in the left (except the hand is turned more palm up holding the globe a bit higher) so maybe this is what the engraver was thinking about on this coin.