A few weeks ago I had posted a very poor pic and a number of you asked for more. Here they are, still not great (iphone!) but a bit better.
As you can see, this incarnation of the 3940 is somewhat of a curiosity, not just because of the salmon dial (which no photo can do real justice to).
The dial appears borrowed from the 5140, but that's an over-simplification of what we see here. The compressed "27" and "5" around the date sub-dial are 5140 rather than classic 3940, but there are other unusual features.
The batons are 3940, but note the stud batons which at the 3 and 9 positions are 3940 though those at 5 and 7 are also such, and I don't believe one finds those on a classic 3940.
Note also the hands, for which I find no 3940 precedent. They are feuille, rather than dauphin, and have no tail beyond the central pivot. The minute hand resolves to a particularly fine point. The later series 3940s with the roman numerals had alpha hands, but they are bulkier than those seen here, and there is also the related 5550 advanced research (love that piece) that has feuille hands, but with tritium. Also, the secondary hands for the 24hour and leap year indicators are of identical material and finish to the primary ones in those sub-dials, unlike the contrasting finishes in some 3940s.
The differences are subtle but, taken together, I suppose that the design team put a premium on delicacy of form, over function. For me, legibility is maintained and in some respects enhanced. The hands are very slim but are cambered so one half of each hand is in shadow while the other half gleams, so time is immediately and clearly legible at a glance (though i am still in the honeymoon of wanting to stare rather than glance!). Likewise, the subsidiary hands in the 3 and 9 sub-dials are sensibly de-emphasised as their associated functions (is it a leap year this year?) are not ones meriting regular scrutiny.
No photos of the back, it is classic 240 with exhibition back (there is a replacement solid back in the box). The packaging was the usual (zebrano?) winder box.
Love to hear the thoughts of those more expert than I!