Patek Philippe CalatravaNot every timepiece from the worlds greatest watchmaker fits neatly into the mold of an overarching theme or collection. While we love a simple Calatrava, a sporty Aquanaut, or a complicated perpetual calendar as much as the next guy, the oddball, more overlooked and usually limited production, shaped watches made by the maison in second half of the 20th century are often some of the most innovative and charming in the brands oeuvre. Take this piece