Countermark

https://rpc.ashmus.ox.ac.uk/countermark/583 
GIC 459
star of eight rays (or reverse)
circular 
4 mm 
as no other examples of Petra coins known with this cmk, site of application uncertain. Similar cmk with larger punch (6.5 mm) on a coin of Damascus 

Coins with this countermark

Number Image TypeNumber CoinNumber VolumeNumber
RPC VI, 9377 (temporary) Show 9106 6 6
RPC VI, 9372 (temporary) Show 9101 1 6