professional-quality fake Autavia dials have been around for a while now, as shown in the Gallery of Fakes.

Here is a sampling:

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: We have seen the Montreal and calculator fake
: dials.
: Now for the first time an Autavia fake dial...

: (There a various fake dials, usualy repainted
: dials from other watches.
: But these are special. They are not repainted
: dials. They are professinally produced on
: purpose, they are well made and the main
: giveaway is the abscence of the silver date
: window and raised hour markers. Oh and the
: fact that the model name is under instead of
: over the Heuer logo...)

: I insist on saying that there are too many
: variations to be 100% sure. But I think the
: chances are too slim for it to be a Heuer
: factory dial.