Does anyone know of a coin with a full name foreignly engraved in Greek or latin? I'm sure they exist. That would be an interesting specimen. The closest I've seen that could be a name is Dionysus' Boeotian stater.
Speaking of graffito. This may be the strangest example I have. Take a look between the staff and ΑΛΕΞΑΝ∆ΡΟΥ
The markings are a lot sharper than any other object on the reverse. That tells me that the coin was already significantly worn before they were applied. Could very well be "modern graffito."
some time after the coin was severely worn. The coin could have been worn in the first 100 years, the graffito applied, then the coin hidden to not be worn any further; implying that the graffito may be ancient. Or someone could have just screwed with an ancient coin, in poor condition to begin with, in the last 500 years. I have no idea.