The earliest verified example?

Seth Thomas Research

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Seth Thomas Research

Seth Thomas ResearchSeth Thomas ResearchSeth Thomas Research

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Railroad Grade

The 1891 Standards

Webster Clay Ball was given authority as the Chief Time Inspector in 1891 after the deadly Kipton, Ohio crash, tasked with enforcing strict requirements for railroad timepieces. Seth Thomas was one company that complied with Webb Ball's new accuracy standards, which specified that any railroad grade watch must be American-made, open-face 16 or 18-size, lever-set, have a minimum of 17 jewels, and be equipped with a steel escape wheel, a micro-regulator, and a bold Arabic dial. Railroad workers were required to submit their watches for regular inspection, and the most important criteria was that any watch had to be accurate to within 30 seconds a week.


How many rail lines chose to comply is debatable, because by the turn of the century there were some 11,000 miles of track, owned by hundreds of companies located in a dozen different states.

Acceptable Models

Model 3 Grade 506

Model 3 Henry Molineux

Model 3 Railway Queen

Model 3 Railway Queen

Model 3 Henry Molineux

Model 3 Railway Queen

Model 3 Henry Molineux

Model 3 Henry Molineux

Model 3 Henry Molineux

Accepted Models

Model 5 Grade 260

Model 5 Maiden Lane

Model 5 Grade 260

Model 5 Grade 382

Model 5 Maiden Lane

Model 5 Grade 260

Model 5 Maiden Lane

Model 5 Maiden Lane

Model 5 Maiden Lane

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Seth Thomas Highlights

The rarest regular-production two-tone pattern of all, made in one block of seventy - and then never again.

Other Rare Examples