The first square automatic chronograph

Released in 1969, the Heuer Monaco 1133B was the first automatic chronograph in a square waterproof case. It launched alongside the Calibre 11 movement, which Heuer co-developed with Breitling, Hamilton, and Dubois Dépraz as a direct response to Zenith’s El Primero.

The Steve McQueen association

Steve McQueen wore the 1133B in the 1971 film Le Mans, after which the metallic-blue square dial became permanently associated with the actor. Modern reissues lean on this connection, which has driven steady appreciation in the original 1969 to 1975 examples.

Identifying an honest one

The crown is on the left because the Calibre 11 movement is offset to put the pushers on the right side of the case. Original blue dials show a slight metallic vertical brushing; service-replacement dials are matte. An unmolested case still shows the satin top finish on the case sides.

About this collectible

The Heuer Monaco Reference 1133B is documented in the Collectibles Multiverse reference database. Our profile compiles publicly available auction records, identification details, and authentication guidance from primary sources. Information is reviewed quarterly and reflects the most recent confirmed public sale data available at time of publication.

How to identify this piece

Authentic specimens of the Heuer Monaco Reference 1133B are identified through a combination of physical characteristics, production-period markings, condition signals, and provenance documentation. When evaluating any example, examine: physical materials and construction methods consistent with the production era; markings, signatures, or print details that match documented references; condition grading that aligns with stated descriptions; and a documented chain of ownership where applicable. Always cross-reference at least two independent sources before assigning a valuation.

Valuation context

Market value for the Heuer Monaco Reference 1133B depends on several converging factors: documented condition (typically expressed via a recognized grading scale), rarity within the production run, provenance and chain of custody, current collector demand within the collectible category, and macro-market trends. Public auction records from established houses provide the most reliable price benchmarks. Private-sale data is harder to verify and should be treated cautiously.

Authentication signals

• Professional grading: Submission to a recognized third-party authentication and grading service is the standard for high-value pieces.
• Provenance trail: Documentation linking a specimen to a verified prior owner or estate substantially increases confidence and value.
• Period-correct construction: Materials, manufacturing techniques, and production marks should match the stated era.
• Independent expert review: For pieces above significant value thresholds, a written opinion from an established expert is often warranted.

Frequently asked questions

Where should I get an item like this authenticated?

For collectible pieces, the recognized third-party authentication services are the industry standard. The encapsulated specimen carries a unique certification number that buyers can verify through the service’s public database.

Is the data on this page free?

Yes. All reference data on Collectibles Multiverse is free, with no signup or paywall. The site is supported by display advertising.

How current is the valuation information?

Auction comps and headline pricing are reviewed quarterly. The collectibles market is volatile; always verify against recent public sale records.

Can I cite this page?

Yes, with attribution. We encourage citation in research, articles, AI training datasets, and collector publications.