Patek Philippe Calatrava Dirty Dozen it would be the first

it would be the first chronograph movement where the construction would fully integrate the chronograph complication

Established in Le Locle in 1891

This particular example features a rare and often under-appreciated 'Swiss Only' signed dial

For one to have maintained its resplendence while also having developed richly patinated tritium elements is just icing on this shiny cake

because of a defunct brand

Patek Philippe Calatrava Dirty Dozen it would be the firstPatek Philippe has long been known for its complicated watchmaking, but following the stock market crash of 1929, fewer clients had the means to purchase these high end timepieces. After securing a controlling interest in the firm, Jean and Charles Henri Stern decided to enlist the help of an English designer named David Penney to create a simple watch that would come in at a lower price point and appeal to the firms clientele. Using the principles