Hello John,
What you say makes alot of sence John. I think your right that Patek Philippe is more a practicle Mechanical type of Company and A. Lange is more Mechanical Art, and lastly Vacheron Constantin is even more artsy and The Diamond Watches, where Patek focuses on the Meat and Potatoes of Time Mechanics and what is relevant and what is not relevent.
John would you wager that the Richard Lange Observatory Watch is no less accurate than the Richard Lange "Pour Le Merite" which has the Fusee and Chain in the wristwatch?
It sounds like The Fusee and Chain is now merely a mechanical work of art and not a needed component for an accurate wristwatch in this day in age, much like the fact that The Tourbillon will not make the watch more accurate but is merely a decoration? Since as we all know when wearing a watch and moving it up and down will cause the Tourbillon not usefull for time accuracy.
Like the fact that Patek Philippe doesn't do a whole lot with designing Skeleton Watches or Diamond Watches the way that Vacheron Constantin does, or this Fusee and Chain that A. Lange & Sohne does?
Thomas