The Patek Philippe 3990 is a diamond-set variation of the 3970 Perpetual Calendar, with the bezel set with a total of 40 baguette-cut diamonds. It was available from ca. 1995 to 2005.Picture by Sotheby’s.


The Patek Philippe 3990 is a diamond-set variation of the 3970 Perpetual Calendar, with the bezel set with a total of 40 baguette-cut diamonds. It was available from ca. 1995 to 2005.Picture by Sotheby’s.
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