- Very Fine Roman Provincial Nicaea Bithynia AE16 coin.
- Struck for Caesar Caracalla between 195 to 198 CE.
- Approx 16mm, 1.93g.
- Obverse: M AV A·NTΩN INoC KAIc, bare head right.
- Reverse: NIKAIEΩN, serpent rising from cista.
- Cista mystica was a basket used for housing sacred snakes in connection with the initiation ceremony into the cult of Bacchus (Dionysus).