Watch List notes:

Constantine I, as Caesar, 306-309. Follis (Bronze, 26 mm, 8.69 g, 11 h), Siscia, 306-307. FL VAL CONSTANTINVS NOB C Laureate head of Constantine I to right. Rev. CONCORD-IA IMPERII / SISΓ Concordia standing front, head to left, holding long scepter in her right hand and fold of drapery with her left; in field to right, VI. RIC 173c. Very rare. Smoothed and with minor traces of corrosion, otherwise, very fine.