Launched in 2005, reference 5146 is fitted with an annual calendar function. The model replaced reference 5035, which was launched in 1996 and at the time, the first serially produced annual calendar model ever made. Before this innovation, watchmakers were offering either highly complicated perpetual calendar pieces or relatively simple triple calendar watches. Reference 5146 maintains intact the aesthetic canons of the original reference 5035, distinguished by three subsidiary counters at 2, 6 and 10 o’clock. This architecture coupled with the distinguished slate grey dial and the timeless Calatrava proportions of the case creates a supremely elegant timepiece.

Offered without reserve, the present example cased in platinum is preserved in excellent condition and was most likely worn a few times only. It is offered as a complete set with its Patek Philippe Certificate of Origin stamped Beyer and dated May 2, 2013, setting pin, product literature, wallet, fitted presentation box and outer packaging.