![REFERENCE 2499/100 'FOURTH SERIES' RETAILED BY TIFFANY & CO.: A YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON PHASES, 24 HOURS AND LEAP YEAR INDICATION, MADE IN 1981 | Important Watches | 2020 | Sotheby's REFERENCE 2499/100 'FOURTH SERIES' RETAILED BY TIFFANY & CO.: A YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON PHASES, 24 HOURS AND LEAP YEAR INDICATION, MADE IN 1981 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/c5efd0d/2147483647/strip/true/crop/2000x2000+0+0/resize/2048x2048!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F94%2F5a%2Fbfb807ba41e699138383a78c8a3b%2Fn10478-bkjcz-38-1.jpg)
REFERENCE 2499/100 'FOURTH SERIES' RETAILED BY TIFFANY & CO.: A YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON PHASES, 24 HOURS AND LEAP YEAR INDICATION, MADE IN 1981 | Important Watches | 2020 | Sotheby's
![Patek Philippe - Very Rare Perpetual Calendar Chronograph - 2499/100J | Luxury brand watches for sale, Monaco, Zurich, Dubai, Hong Kong Patek Philippe - Very Rare Perpetual Calendar Chronograph - 2499/100J | Luxury brand watches for sale, Monaco, Zurich, Dubai, Hong Kong](https://www.watches.de/media/image/c2/06/5b/C859e1c196564fe_1280x1280@2x.jpg)
Patek Philippe - Very Rare Perpetual Calendar Chronograph - 2499/100J | Luxury brand watches for sale, Monaco, Zurich, Dubai, Hong Kong
![Patek Philippe. An exceptionally rare, very attractive and highly important platinum perpetual calendar chronograph wristwatch with moon phases Patek Philippe. An exceptionally rare, very attractive and highly important platinum perpetual calendar chronograph wristwatch with moon phases](https://www.christies.com/img/LotImages/2012/GNV/2012_GNV_01391_0154_000(vulcain_a_fine_18k_white_gold_limited_edition_world_time_wristwatch_wi112316).jpg?mode=max)