This DAFNE coin has a slight bust variation. The left arm (or shoulder) of Constantine is raised. Normally the bust is more truncated, though I have seen similar. Maybe he was doing an adlocutio gesture. Anyway, I think it is a delightful coin! The second picture below is a comparison with the normal type.
dealer's description--
CONSTANTINE I 'THE GREAT' (307/10-337). Follis. Constantinople.
Obv: CONSTANTINVS MAX AVG.
Diademed, draped and cuirassed bust right.
Rev: CONSTANTINIANA DAFNE / Δ / CONS.
Victory seated left on cippus, with head right and holding palm frond in each hand; to left, captive seated left, head right; trophy behind.
RIC 35.
Condition: Near extremely fine.
Weight: 3.65 g.
Diameter: 20 mm.
