Shaun:

I must admit -- I have never studied the differences between the ridges along the sides of the bezels. And at the moment, I don't have any in my collection to be studied.

Let me see whether I can learn anything about this aspect of the Autavia GMTs. In the meanwhile, if any of you have these chronos and want to post your "tooth-count", we can see whether there is a pattern or consistent difference between versions (for example, between early versions and later versions).

Thanks for adding "ridge pitch" to our always expanding language!!

Jeff

+++++++++++++++++++++++++++++++++++++++++++++++++

: Very interesting Jeff, thanks.

: Does anyone have a comment on the two different
: bezel ridge styles?

: As you can see below, there are two styles of
: ridges, one with much finer pitch on the
: ridges.

: Obvious conclusion is the different ridge
: styles corresponded to earlier or later
: models but it is not obvious. Check out
: Jeff's comparison and you can see the close
: pitch style on early and late versions.

: The close pitch ridges on the right are on a
: later fluted pusher / red insert hands
: version.
: The left hand side bezel is from a
: transistional fluted pusher /smooth hands
: version.

: The two watches are shown on the link below (I
: dont know how to post two image URLs)