Anonymous Third-Siliqua, Constantinopolis, AD 330. 1.11 g.

Helmeted and draped bust of Roma right.
Large P within dotted border.

Bendall 2; Goebl 145s; Trau 3982; Paris E1330 and D6357. 

With permission of Auktionshaus H. D. Rauch GmbH, Dec. 2015
Starting Price: 250 euro.