I have an original Marathon steel cased navigator watch dated Febr 1991 with the tritium vials and the black military nylon band. I got this watch a couple of years ago at an auction at Fairchild airforce base and have been wearing it ever since. I have access to a military Adanac which looks very similar to the Marathon but doesn't have the tritium vials. I also have one of the Seiko professional divers watches which are rated to 600 meters, made of titanium and coated with titanium nitride. Are you interested in any kind of a trade for one of your SandY 660s? Thanks.
Don [email protected]