Province Egypt
City Alexandria 
Region Egypt
Reign Trajan
Obverse inscription ΑΥΤ ΤΡΑΙΑΝ ϹΕΒ ΓΕΡΜ ΔΑΚΙΚ
Obverse design laureate bust of Trajan, right, draped and cuirassed
Reverse inscription L ΙϚ
Reverse design temple (classical) with two columns enclosing Sarapis standing, left, holding sceptre; to left, altar

Coin no. 1 of RPC III, 4694.1

 

Reference Kellner 4.10
Diameter
Weight
Axis
Note the altar looks more like a stylised Cerberus (but ‘Stele statt Kerberos’), as pointed out by Keith Emmett