What an amazing post. It really requires a deep breath, Congratulations!
Nicely written article Nico!
Some remarks:
The hands on your watch do have lume, check the hand's tips carefull.
A 1961 German pricelist at least refers to the DSA.
I don't buy the story the american brench had the idea of creating the DSA, more or less I'm convinced JLC just "brainstormed" about the additional use of the alarm disk. The usage is similar to Parking and Worldtime.
For a "die hard" collector only in-house movement powered JLC's are true JLC's, so the chronograph stuff is out of the limits and actually mass production since the entire watch came from a 3rd party and was used by plenty of other watch companies.
The american model with day/date feature is for sure powered by an AS movement (like most of the "Club" watches) and in my eyes questionable because the case seams to be identical to the Deep Sea Master Mariner and was available as spare part some years ago. (I still have an NOS case left). Same with the funky dial which is still available when you dig deep enough.
Unless I see an unaltered catalog entry or an advertising I don`t believe this to be real. I just have seen 2 examples so far, one offered on ebay the other you show coming from JLC's marketing department.
Cheers - Ilja
...I'm too predictable.
Will send you a scan, but be warned, I'm somehow a timeless person. To be honest, I have some kg of vintage JLC material that *should* be available to the public but on the other hand I'm freakin lazy - it was easier to go to DC to get Zaf take pictures of my watches than doing it myself. Lol.
The lume on my DSA's hands was removed since it was pretty discoloured and I made some bad experience with re-lume. Yes I'm speaking about the ends where you can see a darker discolouration.
For some time I'm suspicious about what JLC reports about their history, may it be different production figures or putting history in a more comfortable way. I simply don't know if the DSA was a US branch invention or a Le Sentier idea, but from what I learned about JLC, it is unlikely in my mind.
See this, to figure out how history is broken:
Quote: The first JLC waterproof alarm watch was actually the Deep Sea, a modele created especially for the US market and launched in 1961!
So two mistakes in one sentence, and the info came from your precursor moderator with Le Sentier as his source.
Yes I know I'm splitting hairs...
Cheers - Ilja
PS: Feel free to make an offer.
And if my wife is upset about me buying yet another watch... I will blame it on you.
A truly magnificient post Nicolas. Please accept my hearty congratulations!
Sam
I am in awe as usual of the depth and detail of your report!
I'm a little embaressed and have a lack of confidence, if my platinum report will be "Report a la Nicolas"!
Cheers
Stephen

hi Nic, as usual, you have posted outstanding review again, it can show you have very indepth understanding of these watch models. enjoyed reading it and learnt something new again.
for these diving watches apart from JLC, i have not come across the universal polerouter-sub this model before, it looks interesting to me too. any more details of that, e.g. what movement it was used?
thanks a lot.
stefan
many thanks Nic for pointing that out to me. it is great info there. can't believe you guys have such great knowledge...
cheers,
stefan