Watch List notes:

The Roman Empire

Constantine I, 307 – 337. Medallion of 1½ solidi, Nicomedia 325, AV 6.75 g. D N CONSTANTINVS MAX AVG Laureate, draped and cuirassed bust r. Rev. EQVIS ROMANVS Constantine on horseback r., raising r. hand; in exergue, SMN. C 139. Gnecchi 9. Alföldi 105. Bastien, Donativa, p. 79 note 1 and pl. 4, 16. RIC 100 (this coin listed). Depeyrot p. 154.
Very rare. Traces of mounting, otherwise very fine
Ex Hirsch XXXIII, 1913, 1467; Busso Peus 269, 1968, 289; Busso Peus 270, 1969, 399 and Hess-Divo 314, 2009, 1628 sales. From the collection of a retired banker.