Sterile 6BB–The ‘Lost’ Navigator
From Chronopedia
The 1976 MOD issued Sterile 6BBwatchis somewhat of a mystery to collectors of modern British military watches. It’s cousins, the Hamilton and CWC tonneau shaped W10 General Service watches are well known and easily identified. See here for more information on these models:
Credits - https://www.dbaswithguns.com/Imgs/Sterile_6BB_The_Lost_Navigator.pdf