Constantine II AE3 of Cyzicus. AD 331-334. 18 mm, 2.23 g.

CONSTANTINVS IVN NOB C, pearl diademed, draped and cuirassed bust right.
GLORIA EXERCITVS, two soldiers, each holding spear and shields, standing facing each other with two standards between them.

Mintmark SMKB. 

RIC VII Cyzicus 83.

With permission of Numismatik Naumann auction 73, lot 631, Jan. 2019.