Comments:
New! (to me) E558 Barracuda
Also found a NOS NSA bracelet as watch came with a leather strap.
That is not the good box, but the watch is tops. Bravo! That is a great catch. A watch which should deserve more recognition and love.
The box….
I just read a piece by Blomman! I may search out the less fancy but correct box 
There were a lot of Master Mariner which were not Deep Sea. This box, for me and AFAIK, is from the late 50's early 60's. The MM Deep Sea is from the late 60's.
So the box should be a later one.
Remarkable catch, congratulations 👏🏽👏🏽👏🏽
I’m enamored by this case type which we don’t see much of in modern pieces. Regarding the bracelet, did this model originally come on this type of bracelet or on a strap of some sort? The bracelet here fits perfectly.
I did a little research and there are a few examples on similar bracelets co-branded with JLC and NSA, but I’m no expert - more research required!
Congratulations on the arrival of your Jaeger-LeCoultre Master Mariner Deep Sea aka Barracuda.
That really is a beautiful vintage watch and not one we get to see very often congratulations on a great find and wear and enjoy it in good health.
Marc