Incredible condition 5512 Maxi from 1977 co branded with Tiffany & Company.  The dial lume is Snow White and is in perfect shape with original hands.  The case is a bit worn but appears to be unpolished. The bezel is sharp and the insert is in excellent condition mega fat font petrol blue hue.  The bracelet is original 93150 / 508 with all links plus diver extension.  The movement is running well and keeping accurate time however last service is unknown.  No box or papers included with this however certainly a rare and collectible submariner from the late 70s.