Most of the late Autavia's, including the ones in Viceroy colours, had a thicker ("fatter" if you will) font to the script, especially for the model name. So the dial is most likely original, but not for this configuration.
As a minor point, they also mostly came with tachy rather than deci bezels - and in fact were named 11063 VNT - although we do know that swapping bezels was always an option. Therefore this point would not detract from originality, just it would not be the typical version.
Cheers,
Fabrizio