Thanks for the info.
Indeed it is not the same as the bezel on the 11630P. That's why I believe it was made a some point for the 11063 by Heuer.

: I'm not entirely sure- I think that when I asked Thomas, who I
: bought the watch from, he said that he had put the decompression
: bezel on for a different look, but still had the
: "rolex" bezel.

: However, to support your view, this is certainly an original Heuer
: bezel and it is not the same as the bezel on the 11630P...so
: which Autavia was it originally fitted to?