Indeed, we see more teeth on the earlier bezels (say, around 17 per series) and fewer teeth on the later bezels (say, 11 per series). Perhaps it's only the fourth execution that has the 11 teeth . . . further study required!!

Thanks for this research / reminder!!

Jeff

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

: If you are not convinced about the bezel differences from my
: mediocre photos, check out Paul Gavin's excellent side by side
: comparison pic (in this thread) - the bezel differences are
: obvious in his hi-res photo!