Chronometer Quiz
You’ve read about COSC results here recently, but how much do you know about chronometer testing and certification? Here are a dozen multiple choice and true-false questions, plus an extra-tough bonus question, to test your chronometer knowledge. Will you achieve the accuracy required to earn your certificate? Take this test in 3 positions to find out. Answers appear at the end. 1. Which of these brands submit all of their movements to COSC?A. BreitlingB. ZenithC. Ball Watch Co.D. Ulysse Nardin2. The two Swiss cities that hosted observatories that performed official chronometer tests from the mid-1800s to the mid-1900s were:A. Neuchatel and Le LocleB. Zurich and GenevaC. Bienne and La Chaux-de-FondsD. Geneva and Neuchatel3. The COSC tests:A. Fully cased-up watches with the crystals removed.B. Movements in cases, but with no crystals or casebacks.C. Movements with dials and hands only.D. Movements only4. True or false: COSC certificates report results in 4 languages: French, Germa

Rolex vs AP - as a watch brand
As a watch brand where do you consider AP as compared to Rolex? Is it the same league? I hear some people say that they are different leagues while others consider it to be the same.

Marcus of London
GuysI had to call in to Marcus of London today to drop of my BB so it can be sent to Le Brassus for some TLC ! i was treated to the most amazing AP eye candy that ive ever seen, they has almost every model in stock on display, alond with some of their extremely rare Marcus LEs just though i'd share with you a couple of shots of them ( sorry for poor quality) enjoyps the rose gold one is on Stingray strap !!

Contemplating the following trade, help please...
Buying PP 5960 1g as bellow and selling Rolex YG Sub Black face and Rolex WG Yachtmaster 2. I will have to throw a few bucks in.Still waiting on a 5522 but who knows when...Any comments appreciated.Happy holidays!

5070G Auction Prices... strange
Although on eBay, these were by auction houses: thought 5070G selling prices were in the mid $60K range?