The original bezel is obviously missing, like you already told us.
This bezel is either NOS or a new production run from Tag Heuer made specifically for 11630 vintage Autavias.
As for the effect on the value of your Autavia, IMO an overhauled Autavia with new bezel and hands is a more attractive purchase than an Autavia without a service, with a beaten up bezel and faded/dirty hands. So don't worry.

: Hi to all I sent my Autavia 11630 to Tag Heuer Switzerland For a
: complete overhaul ,Because the watch was missing the Original
: Bezel my Question is: is this the Original Bezel From the 70`S
: ??and the Hands looks a little diffrent as the Old one ,and if
: this little changing have any effect of the value my Autavia
: .thanks
: cheers.
: Amer