Thanks Gummo,
well you've laid out the facts nice & clearly. Your case reference number is probably from 66 which means a signed crown
HOWEVER
I think very few readers would have the ability to look at an Autavia case & see if its a 1st or 2nd execution screwback case at a glance ( well i know i can but i' a nerd
).
The most obvious & therefore defining feature of your watch is the 2nd execution dial & dauphine hands from 63. This is what people will focus on & so accordingly they wont expect to see a signed crown.
Well thats my opinion anyway - Darren