Coin from the collection of prof. Bartosz Awianowicz.
Roman Provincial
Egypt, Alexandria, Diocletianus (284–305), Tetradrachm 290-291
Obverse: laureate bust right
ΔΙOKΛHTIANOC CЄB
Reverse: Zeus seated left, holding sceptre and patera, eagle on left, LZ (7th year of reign) to upper left
Diameter 20 mm, weight 8.48 g