it`s the Grande Reverso Duo It's the medium sized one. I find the large ones just don't fit the wrist quite the way I like. And that's saying something because i'm a big guy who that should work on.
I did try the classic on, but it was so tiny on me it looked like i was putting on a womens watch, which is unfortunate because I absolutely love it's simplicity and elegance. I would recommend trying it on to see if you like it, but if you're a big guy, it's not going to work.
Model number is the 3748421 which gave me the black aligator strap
I debated getting the one with the round second hand insert, but i just didn't feel it worked on a rectangualrly shaped watch.
here's a review of the watch I picked up, except this one's gold.