Picked this up and was wondering if it might be a weak strike or even through grease?
It is affected only on the right side of the coin on both OBV and REV.
The rim looks stronger then the devices which is why I was wondering.
Could be just uneven circulation wear but I'm not sure. I'm used to moderns. Maybe uneven PSI on the strike?



What do the experts think?

Thank you in advance.
