As usual with your posts you make it so difficult to make a choice of just one watch: any of them could make me very happy and you know we share the ownership of some watches, like your Explorer and JLC DSA (US version).
The Lemania Monopusher is a watch I like so much but never had the opportunity of catching in my local hunting grounds. The Big Arrow on the dial makes it more desirable.
The Habring Chrono Rattrapante a very tempting piece which unfortunately is not available here. I need to view it in the metal in my travels. Very nice watch and the Rattrapante complication so attractive and interesting to have.
You got a superb example of the Railmaster, another of my favorites. And the GP Richeville a vintage beauty as well.
I wish you´ll enjoy your Spring Season and these wonderful watches so much my dear friend! Hagwe! Abel