Don't worry. Us eccentric ones (Me, Doug, Harry) can tell that that is a SL65 by the grill.
The grille yes, although the most major distinguishing feature for me - aside from the wheels - is the little front slits in front of the wheels. Such an interesting design feature.
I no longer photograph SL65s, in a recent decision. Too common. I still love to see them, though the car has been described (by SLR owners, admittedly potentially jealous) as being 'all engine' and not the complete machine that most other 604 horsepower cars are.