Jaeger-LeCoultre

Hi. I am trying to figure out what model this is. My internet searching seems to point to the weems "no weems" military watch models because of the fat lugs. It also has a very darkened bezel area. I am not sure if its missing a rotating type bezel or if ...  

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So is this bezel a snap on ring type? Mine is completely bare of chrome. All most like its on purpose to keep it from being shiny or something goes there.

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what does the second crown on a Weems do?

Lock and unlock the bezel edit: Apologies as I should have read on - answered by Amanico

Yours as you noted misses the stainless steel top shield that should cover the base metal that fills the grove and void left on these cases from those intended originally to have the Weems bezel.