A rare RN Lemania 3312. This Lemania series 3 is a non-luminous single button white dial chronograph variation as used by the Royal Navy, specifically for use onboard nuclear submarines. These watches were non-luminous in order that the onboard radiation measuring devices would not be activated. These no-lume Lemania were modified by the MoD and were identical to their luminous counterparts except for the lack of lume. These were designated NATO stock number 0552/924-3312. The original NATO s/number of 0552/924-3306 was struck out and replaced with 3312 so as to distinguish between the variants.


