Up for sale or trade is my Longines Hydro, Reference L3.665.4, beautiful champagne dial. This is a 300M Diver, a real workhorse timepiece. Rotating bezel, quick pick date function, and fully operational chronograph. This particular model, is stamped with the old Longines “EFCo” case back. For the founders Ernest, Francillon & Compagnie. Longines used to offer this but it’s since been discontinued. Fresh 24mm rubber purchased directly from Longines about 4 weeks ago (will include paperwork). If you look this piece up, you will only see 6 available on Chrono24. They discontinued this model making it ever more rare. The crystal is clear, very minor surface wear on the rest of the watch, it can be polished, but has never needed to be. Keeps time perfectly. I am preferably looking for trades. Willing to hear out all options! Cash on my end, cash on yours, either way interested to see what is out there. If you wish to purchase, I’m asking $1300 USD with express shipping. Feel free to reach out for more pictures, FaceTime call, etc!