Watch List notes:

Constantine the Great (AD 307-337), AE Nummus (20.4 x 20.7 mm 3.68 g 6h), London mint, IMP CONSTANTINVS AVG, laureate, cuirassed bust of Constantine right, rev. ADVENTVS AVG N, Emperor mounted left, raising right hand, left holding spear, S and F in fields, PLN in exergue (RIC 1; CT 8.02.001 (this coin)), extremely fine.
Ex Toone collection.

This coin is illustrated on the CT plate

(£150 - £250)