Hi Bernard

I see on IG that you are fiddling with a red needle 1163 GMT - nice;-)

There are some questions regarding my spreadsheet and you have just added another one.

Red vs black hand in 1163 exe. 2:
In the Autavia Book Rich writes ""It is thought that the red sub register hands were changed back to black after Heuer received feedback from pilots suggesting the red lightning in their cockpit meant legibility was low".
That could indicate that there is an ekstra exe. 3, namely the exe. 2 with black hands. Or maybe exe. 2 A and 2 B if we don't want to many executions?

Bezel triangle with or without lume on 1163 exe. 2:
It seems that triangle without lume was original factory spec. But lots of 1163 GMT exe. 2 has lume triangles. Is that because Heuer changed the bezel during the life of exe 2 or are all lume triangle bezels service bezels?

How many executions of the 2446C?:
My spreadsheet lists 4 executions of the compressor case GMT. That is inspired by Jeff's writing here
http://www.onthedash.com/Guide/_Chronographs/62.Autavia/c.Manual--GMT/b.Reference_2446C_GMT/
but also supported by pictures found on Google.
The difference between exe. 2 and 3 is only fluted pushers. Unless the two executions are supported by serial numbers it might also be a case of pushers beeing changed at service.

All input are welcome.

Peter

: Looks great, Peter.
: One thing I would like to know is wether the 1163 gmt didn't have
: more than 3 executions.
: There seems to be some confusion. Did Heuer go directly from the
: Mark2 with red subdial hands to the Mark3 with different hands,
: red accents in the right subdial and black subdial hands?
: Or was there an execution in between, based on the Mark2 but with
: black subdial hands and red chrono second hand? Or did Heuer
: just replace the red subdial hands for customers who didn't like
: them.
: Would be interesting to know more about that.
: Best regards,
: B