Rare $2.5 Million Patek Philippe Chronograph on Offer at Christie's

One of the rarest Patek Philippe models in existence, a one-of-a-kind 18K gold perpetual calendar chronograph wristwatch with moon phases and tonneau-shaped case manufactured in 1943, is expected to fetch up to $2.5 million at Christie's Important Watches sale in Geneva next month. The historically important timepiece, ref. 1527, came to light when first offered at auction 20 years ago, and has since been known as Patek's "large size, one-off perpetual calendar chronograph" among horology connoisseurs. However, Christie's notes, the designation doesn't really do justice to the "highly important masterpiece and historically most interesting forerunner of future generations of complicated Patek Philippe wristwatches." The watch is one of 90 Pateks being offered in the spectacular sale.

[via JustLuxe]