Ray in my humble opinion, Its not incorrect.. to shoot photos
That are not fully SQUARE to the lens...Tilted to show the best of the coins appearance..as lighting in most circumstances..gets most of it correct but things are missing..as the coin size gets bigger....,.It does not quite get it right...I think dave is seeing this in his quest on the silver dollar... the differences in the reflectivity in the coin in hand....or its condition....and the lighting to bring its best appearence out...