Watch List notes:

Constantine I. A.D. 307/10-337. AE 3 - quartered (12.1 mm, 1.00 g). Uncertain mint, struck A.D. 324-330. CONSTAN[TINVS AVG], laureate head right / D] N CONSTA[NTINI MAX AVG], legend around VOT/XX or VOT/XXX. VF. Rare. 

Quartered to make change. Collector's note: According to Victor Failmezger, he has not seen one of these.Possible mints include: Ticinum, Rome, and Heraclea