This one:
In 1974, the M.N. started to extensively equip their commando marines with Tudor submariners. From this point, most of the watches (except a few, for some "sterile" reasons) are marked on the back MN 19xx or MNxx. This date -1974- is very important from a collector's point of view. This transitional model (case reference 7016/0) always has a black dial and "square" or "diamond hands" (see below) The case back is slightly different from subsequent models in that it retains somewhat of a "bubble back" look. The movement is now an ETA 2483, non-hack, no longer found on the earlier models. Of course, the rose is no longer the Tudor emblem, replaced in the late 60's by the current shield.