The second of the thirtieth-anniversary annual calendars, in white gold with a blue-grey dial in a double-satin finish. Where the rose gold reference takes the warmer register, this one states the same complication — Patek Philippe's own, correcting once a year rather than never or monthly — in the maison's cooler classical idiom. What matters on examination: the calendar's behaviour across a 30-day month end and the exactness of the moon-phase setting; and the dial, since a double-satin finish shows handling marks that a grained or sunburst surface would absorb. Confirmed through the desk. Maker: Patek Philippe. Reference: 4946G-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.