Countermark

https://rpc.ashmus.ox.ac.uk/countermark/285 
GIC 156
laureate (?) head l.
oval or semi-rectangular 
9.5 x 6 mm 
RPC I concluded that GIC 156 and GIC 160 were the same countermark 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 4982 Show 4982 1 1
RPC I, 4983 Show 4983 7 1
RPC I, 4984 Show 4984 1 1
RPC I, 4985 Show 4985 3 1
RPC I, 4986 Show 4986 2 1
RPC I, 4987 Show 4987 2 1
RPC I, 4984 Show 4984 3 1
RPC I, 4982 Show 4982 8 1
RPC I, 4984 Show 4984 4 1
RPC I, 4984 Show 4984 5 1
RPC I, 4986 Show 4986 4 1
RPC I, 4983 Show 4983 11 1
RPC I, 4982 Show 4982 10 1
RPC I, 4982 Show 4982 11 1
RPC I, 4985 Show 4985 5 1
RPC I, 4982 Show 4982 12 1
RPC I, 4985 Show 4985 7 1
RPC I, 4983 Show 4983 15 1
RPC I, 4982 Show 4982 18 1
RPC I, 4982 Show 4982 17 1
RPC I, 4984 Show 4984 8 1