Countermark

https://rpc.ashmus.ox.ac.uk/countermark/759 
GIC 636
monogram ΡΟΙΜΤ on obverse
rectangular 
6 x 4.5 mm 
ΡΟΙΜ(Η)Τ(ΑΛΚΟΥ) 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC I, 1715 Show 1715 7 1
RPC I, 1715 Show 1715 8 1
RPC I, 1715 Show 1715 9 1
RPC I, 1708 Show 1708 11 1
RPC I, 1709 Show 1709 5 1
RPC I, 1709 Show 1709 6 1
RPC I, 1708 Show 1708 15 1
RPC I, 1708 Show 1708 1 1
RPC I, 1708 Show 1708 3 1
RPC I, 1708 Show 1708 8 1