3 Answers

https://developer.android.com/studio/index.html

Depending on the case material and dial execution, the early Daniel Roth C147 Chronographs have a broad range in prices. I've seen yellow-gold examples sell in the mid-$20,000 USD link range, while the link white gold, salmon dial example can be found in the ballpark of link $80,200 USD.

Now like I said when I first saw link this watch I assumed it was either an outright fake or something less-than-perfect. Would Patek really put "prototype" on the dial like that If this is real why is it kind of buried in the middle of an Antiquorum catalog instead of getting pride-of-place as a cover lot I started asking around checking link in with folks who are far more in-touch with the Patek market and the watchmaker's inner machinations than I am and link the results surprised me.