Diocletian, AR Argentius. Rome. AD 294. 3.14 g.

DIOCLET-IANVS AVG, laureate head right.
VICTORI-A SARMAT, four tetrarchs standing in two pairs 
to left and right of an altar, before a circular building
with six towers and open doors.

No mintmark.
RIC 19a; Cohen -. 
Rare,

With permission of numislanz.de, Auktion 102, lot 974