I suspect she or her husband had been looking to misrepresent its value and make a huge profit on a coin worth $50 and try to sell it to someone for a hundred or two. Once they see you may have an idea of what it is and what its worth they drop off.... I told her i posted it on a coin forum and that was it... She disappeared... I get this much too often and its usually just a huge waste of time... Also when she realizes she may have nobody else to go to she may message me back a week later hoping to sell.. I guess i really never knew her true intentions as she seemed pretty sketchy...
Seems like a nice genuine coin. It's decent example of a scarcer (but not rare) historical type. I personally like the green patina. I'd be totally unsurprised to see a coin like that sell for $75+. $50 would be a good price. From the photo I wouldn't be concerned about bronze disease. The obverse areas at 2 and 4 o'clock look darker than the rest, not lighter as I'd expect for bronze disease.
It did look mildly attractive. At this point its not going to happen. Should the seller decide to pull her head out... I will update. Thank you all for the attention to the subject and all the informative replies !
That brought to mind a particularly egregious and hilarious example of this phenomenon. Remember the eBay $1M "the only complete strike" owl tet eBay listing and NCG inquiry? https://www.cointalk.com/threads/ebay-fail.315121/