Originally posted by LowVoltage I was under the impression the coating resilience was mentioned because the other coating, presumably the Aero-Bright, was prone to damage during cleaning. However, that would suggest the AB coating could also be found on the outer elements. Perhaps only the rear element? I don't know...
I'm not 100% sure, but I think in the DA*55 it's only found in one(!) internal element. If you look inside the lens under e.g. a bright lamp you can see that one of the internal lens surface reflections has a completely different color than the others, which is probably due to the different coating. Also, in the current PDF lens catalogue, which contains lens diagrams of all lenses, one element of the DA*55 is colored light orange. It is not explained what this color means, but it is different from the colors of Asphericals (green) and ED-Elements (blue):
By the way, the same is true for the very expensive Nikon AF-S 85/1.4G, which also proclaims to use a magic Nano-crystal coating, but it has been confirmed that it's only used on one single lens element.