Archive work
Serial research · archive cross-checks · specialist references
Date a watch.
Choose the maker, enter the number, and get the clearest date the surviving evidence can support.
Explore tools
Research scenes
Sharper at first glance. Calmer in use.
The interface steps back and lets the search do the talking. Imagery stays atmospheric, while the dating workflow remains fast, crisp and easy to scan.
Movement detail
Use the right number.
Specialist tools
Hallmarks, clasps, certificates.
Current coverage
Rolex · Omega · Speedmaster · Tudor · Patek Philippe · Audemars Piguet · Breitling · Longines · IWC · Jaeger-LeCoultre · Atmos · Vacheron Constantin · Zenith · Universal Genève · Tissot · Certina · Bulova · Panerai · Seiko · Citizen
Dedicated database workflow
American pocket watches.
For Waltham, Elgin, Hamilton and other American makers, start with the serial stamped on the movement.
Quick specialist lookups
Hallmarks, codes
and today’s gold price.
Specialist lookups for the details that often settle a catalogue note — now including a live daily gold-price reference.
01Sweden
Hallmark year
Decode the Swedish year designation used on precious-metal objects since 1759.
02Rolex
Clasp code
Date a historical Rolex bracelet clasp. Month suffixes are decoded where documented.
03Patek Philippe
Certificate code
Decode the PATEKHRONS cipher found on many 20th-century Certificates of Origin.
Today’s gold price
Direct cash price · SEK per gram.
Loading latest prices…
24K
23K
21.6K
18K
14K
9K
Direct cash reference price · updated automatically.Source ↗
Methodology
Elegant on the surface.
Elegant on the surface.
Disciplined underneath.
The large date is the clearest estimate the loaded evidence supports. V13 prefers agreement between established specialist sources; where sources disagree or the sequence is non-linear, the wider range stays visible instead of forcing a false exact year.
Serial dating is not authentication. Production, assembly and sale dates can differ, and some identifiers belong to movements rather than cases. Protected third-party databases are used only as external validators, not copied into this site.