Hello All, I tend to spend my time here in OF in the UG section. That said, I am trying to learn a bit about the Zenith Chronos. More specifically, regarding the El Primero Chronograph movement -- is there more than one version? I had thought there was a 386 then later a 3019 that evolved into the 400 (which I believe is what Rolex modified for the 16520 ref Daytona), but then I came across this 4002 on eBay https://www.ebay.com/itm/283202523760?ul_noapp=truePurchases made through these links may earn this site a commission from the eBay Partner Network So yes I'm a noob as far as the Zenith El Primero chrono movement... but perhaps someone can help school me? Thanks!!
Here is a link to what is certainly one of the best online resource on the ELP movement. It is in Italian but you should be able to feed it into a translator if you aren't able to read it. https://orologi.forumfree.it/?t=31321982
Vi prometto che ne farò una traduzione in inglese che posterò sul vostro forum. I promise you that I will make a translation in English that I will post on your forum.