just adding a little background in response to Captain...
By: terbaboom : May 25th, 2021-11:41
i was shown this watch by my AD shortly after buying the 5196R, my first Patek Philippe. this is the 5235G and upon doing a little research, i found this watch very interesting with its hacking second hand, rather unusual frequency at 23,040 vph, silinvar components and being the first Patek Philippe regulator. i had wanted to add a second Patek Philippe to my collection and since this very interesting piece came along, i decided to go with this. the decision didn't take too long, as this was a rather uncommon watch to see in the AD back then.
Thanks for sharing a terrific shot of this beautiful movement, and congrats on adding a 5235 to your collection -- one of the most original modern Patek references, one that would indeed deserve more attention from collectors! Enjoy ;-)