> Considering having some prime UNC Mexican coins Certified. Any
> advice as to whether PCGS, NGC or ANACS will, over time be the most
> marketable? Thinking of the day when they will be in my estate.
There's no way to know. PCGS is the flavor-o'-da-week right now, but
there's no guarantee they will be that in the future. If you're slabbing
them for your own peace of mind, just pick your favorite service. Or the
cheapest, perhaps. But if you're slabbing for perceived maretability,
you're best advised to wait until you actually want to sell before
setting on a particular service.