View 1. Thumbnail of Lot 2283. Patek Philippe | Reference 3448, A possibly unique yellow gold perpetual calendar bracelet watch with moon phases, original Certificate of Origin and presentation box, Made in 1978 | 百達翡麗 | 型號3448 獨特黃金萬年曆鏈帶腕錶，備月相顯示，附帶原廠證書及盒子，1978年製.