hello all, I don't know anything about old coins but am looking to get one for my brother for xmas. so I was looking at the marc antony silver legionary denurius. apmex has one in a nice display graded vf for $700 is that a fair price? Littleton coin has them graded very good for $200. that seems like an awful large price difference. how can you tell a fake on the internet? I don't mind spending the $700 at apmex if that's a fair price. does the grade of coin really make that much difference in the price? im wading into waters I know nothing about and would appreciate any help anyone can offer. thanks in advance.