Countermark

https://rpc.ashmus.ox.ac.uk/countermark/1592 
GIC —
diademed and draped bust of (Trajanic or Sabina) empress, r.
oval 
8 x 7 mm 
Uncertain (Uncertain)
empress could be Plotina, Marciana, Matidia or Sabina? 
List of countermarks View on a map

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
Show 228