Patek Philippe | Reference 3448, A possibly unique and very unusual yellow gold perpetual calendar wristwatch with moon phases and highly unusual leap year indication, Made in 1976 | 百達翡麗 | 型號3448 獨特及非常罕有黃金萬年曆腕錶，備月相及特別閏年顯示，1976年製

This automatic perpetual calendar wristwatch reference 3448 is incredibly unusual, intriguing and potentially unique. Made in 1976, the highly unusual feature is the presence of the leap year indicator between 3 and 4 o'clock. Including this watch, only three 3448 are known with a leap year indicator. One of which features a leap year indicator that illustrates the 4th year with Calatrava Cross bearing the movement number 1'119'438 and was sold in the mid 1990s at Antiquorum. The watch had an interesting footnote at the time and stated that the watch was given to the consignor after 25 of service working at Patek Philippe. The second example is the watch we are offering and the third with movement number 1'119'459 is known with luminous dial.

Consigned by an important Asian collector, the present watch was first offered on the market at Antiquorum in 2013. The watch was sold with a property designation as Private Property from a Swiss Family and this very watch maybe one of the earliest known Patek Philippe perpetual calendar wristwatch with leap year indication.