Countermark

https://rpc.ashmus.ox.ac.uk/countermark/878 
GIC 742 ii
denominational mark S
rectangular 
4.5 × 2.5 mm 
applied to coins of Titus and Domitian 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC II, 930 Show 930 18 2
RPC II, 929A Show 929 5 2
RPC II, 929 Show 929 6 2
RPC II, 931 Show 931 20 2
RPC II, 931 Show 931 13 2
RPC II, 931 Show 931 12 2
RPC II, 928 Show 928 2 2
RPC II, 929 Show 929 2 2
RPC II, 931 Show 931 3 2
RPC II, 927 Show 927 4 2
RPC II, 930 Show 930 3 2
RPC II, 928 Show 928 11 2