See, this is where I struggle to understand or even attempt a proper explaination of how overstrikes should appear. Perhaps a better understanding of how overstriking on uneven planchets with uneven striking, pressure etc might give a better overview but this is beyond my understanding.
Areas that should be flattened aren't necessarily flattened in quite a fair bit of examples that I have seen such as this example that I have:
(the latter words of "4 kopeks" should be very visible)
However though, anything that has high value is prone to counterfeits so I guess it's a matter of time when an explosion of them will start popping up.
Speaking of which, I believe this is a counterfeit:
Just kept it for the oddity sake.