That looks like a ref. 960 or 975, possibly chrome case with stainless back (975-C?), with the optional dial seen in fig. F at the right-hand side of this brochure: Advertisement from December 1945:
After a "detour" to seamaster 300 spectre due to a 007 spectre cigar lighter and cutter set, back to my B&R week with limited desert type. Unfortunately B&R decided to come out with unlimited desert type with a even nicer sandwich face... Anyway, i still like it
A big thank you out to @Optimizer13 for finding my long missing part and making this wrist shot possible! Said part in question...it's always the little things, isn't it.
Toyed around with a new Nato on the Seamaster C-case tonight... Pretty happy with the result! GULF POWER!