There is an excellent post made by Dje in 2011 that I may link here:
patek.watchprosite.com
And you're right to emphasize the fact that the "grand finale" was the introduction of the QP instead of an Annual Calendar complication. I noticed that point only lately...
I will post a sum-up of these introductions in a few days.
Thanks for the reminder CH' !
Cheers, Mark
This message has been edited by Mark in Paris on 2015-04-19 08:16:52