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The Encyclopedia of Horology

Identify my watch or clock

Identification Centre

This workflow does not name your watch. It produces an accurate description of what you actually have, which is the only reliable basis for searching maker records, serial tables and hallmark registers. Photographs alone cannot establish authenticity.

AI assistant

Suggest clues from a photo

Your photo is sent to an AI model for this one answer and is not stored by this site. Suggestions are clues, not an identification, valuation or proof of authenticity.

Add a photo and whatever details you know, then choose “Suggest clues”.

Workflow

Describe the object, step by step

Step 1 of 6

What type of object is it?

Start with the object class: this determines which reference sources apply.

Guides

Markings, hallmarks and numbers

Hallmarks

British marks give standard, town, date letter and maker. They date the case precisely — and only the case.

Serial numbers

American factory tables give approximate production years. Swiss trade numbers usually identify a finisher or retailer instead.

Import and patent marks

Import marks indicate the market and a date range; patent numbers can be traced to a filing and inventor.

Further reading

Go deeper on this subject

Identification works from the object outward: movement layout, case marks and numbers first, then makers, records and published ranges. These pieces take each step in more detail, with worked methods for hallmarks, serial tables and unsigned work.

Articles

Academy lessons

Research guides