The Patek Philippe Henry Graves Supercomplication is widely considered the most important wristwatch (technically a pocket watch) ever made. Commissioned in 1925 by New York banker Henry Graves Jr., who wanted to outdo automaker James Ward Packard’s complication race, the watch took 8 years and was delivered in 1933. It contains 24 horological complications powered by 920 individually crafted parts. In November 2014, Sotheby’s Geneva sold the Supercomplication for CHF 23.2 million ($24 million) — the highest price ever paid for any timepiece.

Why the Supercomplication matters

For nearly 60 years, the Henry Graves Supercomplication held the record as the most complicated mechanical watch ever made — a record only broken by Patek Philippe themselves with the 1989 Calibre 89 (commemorating the brand’s 150th anniversary). Among its 24 complications: a perpetual calendar, a celestial chart of the night sky as seen from Graves’ Manhattan apartment, sunrise and sunset times for that location, sidereal time, equation of time, a Westminster chime grande-and-petite-sonnerie, a minute repeater, a chronograph with split-seconds, a power-reserve indicator and a moonphase. It is simultaneously a watch, a planetarium, a calendar and a musical instrument.

How to identify and authenticate

The watch is unique. Patek Philippe’s archives in Geneva hold every original drawing, prototype component and assembly note. Authentication is therefore trivial — only one Henry Graves Supercomplication exists. The watch is currently in private collection (a Qatari royal-family member, per public reports). The 1989 Patek Calibre 89 — also unique-piece-class but produced in four examples — is sometimes confused with the Supercomplication; the Calibre 89 has 33 complications and uses a much more modern movement architecture.

Market and value

The Supercomplication has been sold at public auction twice: 1999 (Sotheby’s, $11 million, then a world record) and 2014 (Sotheby’s Geneva, $24 million, still the world record for any timepiece). Each sale set new pricing for grand-complication watches. Provenance includes the Graves family until 1969, then Time Museum (Rockford, Illinois) until 1999, and private collectors thereafter.

Where to see one

The Patek Philippe Museum in Geneva displays the Calibre 89, the brand’s other ultra-complicated reference, on permanent rotation. The Henry Graves Supercomplication itself is in private hands; it has appeared at exhibitions in Geneva, Doha and London on rare occasions. The Time Museum’s archived photographs and documentation are publicly accessible at the National Watch and Clock Museum in Columbia, Pennsylvania.

For families and beginners

Patek Philippe’s modern Grand Complication line — the 5270G perpetual calendar chronograph, the 5304R minute repeater perpetual calendar, the 5208P triple-complication — start at $300,000–$1.5 million retail. More accessibly, vintage minute repeaters from Patek, Vacheron Constantin and Audemars Piguet (1960s–80s) trade in the $50,000–$200,000 range. For older children fascinated by mechanics, the IWC Schaffhausen factory tour (free, with appointment) and the Patek Philippe Museum (free entry) are world-class introductions to horological complication.

Care and storage

Grand-complication watches require service every 5–7 years by master watchmakers in their original workshop. The Patek Philippe Geneva facility is the only place in the world equipped to service the Supercomplication. Avoid magnets, extreme temperatures, and physical shock. Storage at 40–55% RH in a dedicated watch safe is standard for any grand complication.

Read next

Continue with the Patek Philippe Calibre 89 (1989), Vacheron Constantin Reference 57260 (2015 — currently the most complicated wristwatch ever made with 57 complications), and the Audemars Piguet Universelle (1899 pocket watch) — the broader story of horological complication.

About This collectible

The Patek Philippe Henry Graves Supercomplication is a notable entry in the collectible category. Whether you are a seasoned collector or evaluating your first piece, understanding provenance, condition, and market context is essential for confident decisions. This guide summarizes what makes this item collectible and how to evaluate examples in the market.

Identification & Authentication

Authenticating a Patek Philippe Henry Graves Supercomplication requires attention to period-correct materials, manufacturing marks, signatures, and chain of custody documentation. Where third-party authentication exists (PSA, JSA, Beckett, SGC, PCGS, NGC, or category-specific authenticators), graded examples carry significant premium over raw pieces. Consult a recognized authenticator before high-value purchases.

Valuation & Market Pricing

Values for the Patek Philippe Henry Graves Supercomplication vary by condition, provenance, completeness, and demand. Track recent sold prices on major venues including Heritage Auctions, Goldin, Christie’s, Sotheby’s, and eBay completed listings to benchmark fair market value. Realized sales reflect true value; asking prices do not.

Condition & Grading

Condition is the largest variable affecting value. Use the grading scale appropriate to the category and document defects honestly. For graded items, verify certification numbers on the grader’s website. For raw items, photograph all surfaces under neutral lighting and disclose any restoration or imperfections.

Where to Buy & Sell

Reputable venues include major auction houses, established dealer networks, specialty shows, and vetted online marketplaces. Avoid private cash transactions with unknown parties for high-value pieces. Use buyer protection or escrow when transacting at scale.

Frequently Asked Questions

How do I know if my Patek Philippe Henry Graves Supercomplication is authentic?

Authenticity is best confirmed by a recognized third-party authenticator. Visual inspection alone is rarely sufficient for high-value pieces.

What is a Patek Philippe Henry Graves Supercomplication worth?

Value depends on condition, provenance, and completeness. Check recent sold prices on major auction venues for comparable examples.

Where should I sell my Patek Philippe Henry Graves Supercomplication?

For high-value pieces, established auction houses with category expertise typically deliver the best results. For mid-market items, vetted online marketplaces or dealer networks balance reach and fees.

Does grading add value?

For most categories, third-party grading adds meaningful value to top-condition examples. For lower-grade pieces, the grading fee can exceed the value uplift.