Watch List notes:

The Roman Empire

Constantine I, 307 – 337. Follis, Treveri 321, Æ 2.77 g. CONSTA – NTINVS AVG Laureate and mantled bust r., holding eagle tipped sceptre. Rev. BEATA TRANQVILLITAS Altar inscribed VOT / IS / XX, surmounted by globe and three stars. In exergue, Ÿ STR Ÿ. C 17. RIC 305.
Very rare. An interesting and unusual portrait and a dark green
patina. Virtually as struck and almost Fdc