THE WATCH INDEX

A horology library for the curious collector.

A growing archive of vintage and pre-owned watches, manufactures, model lines, and calibers. Historic Provenance, specifications, authentication notes, and market context organized and made accessible. Built one report at a time, by the OTTUHR team.

Browse by manufacturer

291 reports and growing.

Omega178 reportsRolex30 reportsUniversal Genève19 reportsVacheron Constantin19 reportsZenith17 reportsPatek Philippe10 reportsZodiac8 reportsValjoux6 calibersAudemars Piguet5 reportsHeuer5 reportsWittnauer5 reports

What's inside every report

Provenance & history

Production years, quantities, and the story of the reference in context.

Caliber & specs

Movement, beat rate, jewels, power reserve, dimensions, escapement.

Cross-reference data

Compatible cases, dials, crowns, crystals, and part numbers.

Authentication notes

Identification marks, serial formats, and what separates right from wrong.

Browse by caliber

130 movement reports.

Valjoux 72 · chronographRolex 1570 · automaticOmega 565 · automaticOmega 601 · manualOmega 620 · manualZenith 156 · chronograph