![Vintage Patek Philippe Ref.3970 18K Rose Gold Chronograph Perpetual Calendar from 1989 – Now at 2Tone Vintage Watches Singapore. Vintage Patek Philippe Ref.3970 18K Rose Gold Chronograph Perpetual Calendar from 1989 – Now at 2Tone Vintage Watches Singapore.](https://www.2tonevintage.com/wp-content/uploads/2021/12/patek-philippe-ref3970e-rose-gold-1989-img-main4.jpg)
Vintage Patek Philippe Ref.3970 18K Rose Gold Chronograph Perpetual Calendar from 1989 – Now at 2Tone Vintage Watches Singapore.
![Vintage Patek Philippe Ref.3970 18K Rose Gold Chronograph Perpetual Calendar from 1989 – Now at 2Tone Vintage Watches Singapore. Vintage Patek Philippe Ref.3970 18K Rose Gold Chronograph Perpetual Calendar from 1989 – Now at 2Tone Vintage Watches Singapore.](https://www.2tonevintage.com/wp-content/uploads/2021/12/patek-philippe-ref3970e-rose-gold-1989-img-cat1.jpg)
Vintage Patek Philippe Ref.3970 18K Rose Gold Chronograph Perpetual Calendar from 1989 – Now at 2Tone Vintage Watches Singapore.
![Reference 3970/E | A yellow gold perpetual calendar chronograph wristwatch with moon phases, Circa 1991 | Important Watches | 2023 | Sotheby's Reference 3970/E | A yellow gold perpetual calendar chronograph wristwatch with moon phases, Circa 1991 | Important Watches | 2023 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/99b6545/2147483647/strip/true/crop/3543x3543+0+0/resize/1024x1024!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F13%2Fe6%2Fdcbab05346119e61df390476300c%2Fn11271-9wstd-1.jpg)
Reference 3970/E | A yellow gold perpetual calendar chronograph wristwatch with moon phases, Circa 1991 | Important Watches | 2023 | Sotheby's
![REFERENCE 3970/E 'SECOND SERIES' A YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON PHASES, 24 HOURS AND LEAP YEAR INDICATION, MADE IN 1987 | Important Watches | 2020 | Sotheby's REFERENCE 3970/E 'SECOND SERIES' A YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON PHASES, 24 HOURS AND LEAP YEAR INDICATION, MADE IN 1987 | Important Watches | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/8d76f5a/2147483647/strip/true/crop/1334x2000+0+0/resize/2048x3070!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F35%2F68%2Fb3113cd647e19ca901a5d90a7d27%2Fn10478-bkjd2-1.jpg)