Watch List notes:

Constantinus I (306-337) - BI Centenionalis (Siscia AD 326-27, 3.53 g) – CONSTANTINVS AVG, laureate bust right / PROVIDENTIAE AVGG, two-turreted gateway of military camp, star above, mint mark SIS in exergue preceded by officina mark A, dots preceding and following the marks (RIC vii, p. 449, 200) – EF