As we introduced you to our Catawiki Favorites (Editors Choice) a? few weeks ago already, this time we show you three different watches of our choice: Zenith El Primero Chronomaster, a Bell Ross (by Sinn) chronograph and a Cartier Tortue in gold.This article is a partnership with Catawiki, but our selection consists of watches that we picked and theres no interference from Catawiki regarding the editorial work. If you are not registered on Catawiki yet, we urge you to do so. It is free or charge and will make bidding and marking watches as interesting a lot easier, click here to do so.As always, let me start by saying that before you bid on a watch, you should have done your homework. A lot that consists of a brand new or Omega requires less homework than when you are on the hunt for that vintage treasure (of any brand), but always make sure you come (and bid) prepared.The selection I will show you here, are recently sold items. Yes sold. The thing is, the turnover on Catawiki of auction items is so quick, it leaves us with little time to do a proper write-up. So I show you some watches that I liked of the previous auctions, which might inspire you to look for the same or similar watches. Each watch gets a bit of description, which I hope helps you in making the right decisions.Catawiki FavoritesThis week, I chose a couple of watches that I would define as personal favorites of mine. To be honest, the Zenith, Bell Ross and Cartier watches I have here today have been favorites of mine since a long long time. The Cartier Tortue might be the most recent, but still since years already, ever since Cartier expert George Cramer showed me his Cartier Tortue on this wonderful green leather strap. So I had to include this watch here. The Zenith El Primero Chronomaster was actually one of my first encounters with a mechanical moon phase watch. A friend of mine, watchmaker and goldsmith, owned (or perhaps still does) this model in full gold and it made a huge impression on me when I started to become interested in mechanical watches in the late 1990s. The model I have here today is much more recent, but is based on the same model basically. Last but not least, a Bell Ross. As you might know, when Bell Ross started out, they had this partnership with the German company from Frankfurt am Main, Sinn Spezialuhren. Bell Ross had a couple of models that were similar, or actually the same, as some of the Sinn models. To be dead-honest, I dont care much for most of the current Bell Ross watches. They are pretty good watches, but I dont fancy a square watch on my wrist. Some of their Vintage collection are more to my own taste. However, nothing beats a Bell Ross by Sinn in my book, the Space One being my absolute favorite (based on the Sinn 142).Without further ado, lets have a closer look at this weeks selection.Bell Ross by Sinn chronographThe Sinn 103 chronograph is a classic and Bell Ross used it at the start of their career for their own collection. Sinn supported Bell Ross heavily at the time, so you will find a number of Sinn references models in the early days of Bell Ross collection books. This watch marks the start of Bell Ross.If you dont care much about that, but just like the looks of this watch, I suggest you order a brand new Sinn 103 for under 1600 directly via their e-boutique. If youre a Bell Ross collector or aficionado, this watch might mean more to you.This Bell Ross by Sinn (103) was sold for 1750 on Catawiki. The watch comes with a travel pouch and a certificate by the seller that it is an all authentic watch. Those papers dont mean much to me, as anyone can create those. I am not sure what originally was delivered with this watch, regarding box and papers, but I would definitely have this sorted before you bid on a watch without box and paper work.The Bell Ross by Sinn (103) dates from the 1990s and has a Valjoux 7750 powered movement. All details are equal to that of the Sinn 103. The dial shows the Bell Ross logo as well as the by Sinn addition. The large Arabic numerals on the dial and hands are lumed with tritium.