This is the most appealing contemporary steel Patek sports watch to my eye. The rarity, style, and sheer mass of added-value mechanical refinements appeal to both right and left brain masses
Frankly, I cannot understand the breathless effort to pay 40-50% over list for the 5711/1A... nice watch, but for that kind of money, make my steel Patek a flyback/annual calendar any day of the week.