Breitling 'Neptune' 80210 1980s quartz diver  Commonly listed as a 40mm case but more like a large 38mm. From what I understand, this was made in conjunction with DPW and sold only in military catalogs and marketed mostly in Europe. I haven't opened it but they're supposed to have a generic ESA quartz like all Breitling Colts of that era. A NOS ESA or ETA 956.313 or equivalent would work.  Breitling marked case/case back but DPW crown, I was told this is original but cannot say for sure. I purchased in Southeast Asia from someone specializing in militaria, with other military watches and items. Running great with a battery replacement last year. Condition is used but not abused, PVD case has some wear, notably in the lug holes and bezel edges. Mineral crystal has minor scratches but nothing major and nothing that detracts from dial visibility. All in all, in great condition for a military sold watch from 40 years ago.  Watch only on generic vintage style dive strap. $375 shipped CONUS