Just a heads up for everyone to remain vigilant. There were some accounts hacked here on CoinTalk recently. It has also happened on the NGC and PCGS forums (with several more cases the last few days over at PCGS). If someone messages you offering gold under spot or anything else that seems too good to be true, be cautious.
The scary thing about these recent hacks is that whoever is responsible knows at least some basics about coins. They have pictures of real coins and descriptions aren't obviously fake. There was also a case yesterday where the scammer sent "proof" of his identity by showing a Verizon bill with the actual name/address of the person that was hacked. The bill turned out to be a fake that was generated online and just added the address info but it was fairly convincing. So again, stay vigilant and look everything over super carefully.
I haven't sold a coin since the 90's, so if it's a sale from me, it's FAKE. The Romans had a much better justice system than we do. They had most delightful ways to deal with miscreants, such as scammers.