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It's still ongoing and I intend to update the article as I learn more. Speaking of auction catalogs, I've seen 198'144 mentioned in one, which I believe is a typo and meant to be 138'144.

After noticing a lack of information on the topic available I decided to write a history of Patek Philippe's grand complicated timepieces. Any feedback is appreciated. Here's the link

The classic definition of a grand complication would be a minute repeating clockwatch, with big and small strikes (in addition, to the split-second chronograph and perpetual calendar). The Graves watch you posted a picture of is an example of this, AP's recently launched RD4 is another. That's why P