Maratha Rupee w countermark

[Rangnath]

Another coin of the Bhonsala clan of the Marathas, this is, I think, an 1825 rupee of the Katak mint, km 18. It appears to have counterstamps.  My questions are:
Are they?
If they are, is that common?  What do they indicate?
Richie

[Figleaf]

They look like test marks to me, made by a trader or silver dealer to determine the silver content.

Peter

[Rangnath]

Right you are. I guess Schoff marks, test marks and counterstamps serve the same purpose; to authenticate the coin. 
richie