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The Encyclopedia of Horology

High-grade lever pocket watch movement family · United States

Waltham Railroad-Grade Movements (Vanguard and related grades)

Needs research

Representative rather than a single unique object: the Vanguard and comparable Waltham railroad grades illustrate American industrial precision watchmaking built to meet railway time-service standards.

Technical facts

Escapement
Lever, typically adjusted to temperature and multiple positions
Jewel count
Commonly 21 or 23 jewels in the highest railroad grades — verify against the specific movement, not the grade name alone
Regulation
Micrometric regulator common on later production

Historical significance

  • Representative rather than a single unique object: the Vanguard and comparable Waltham railroad grades illustrate American industrial precision watchmaking built to meet railway time-service standards.
  • Individual surviving examples vary enormously in specification (jewel count, adjustment, case), so any specific example must be documented on its own terms rather than assumed to match a generic 'Vanguard' description.

Related photographs

WalthamWatchCompany
WalthamWatchCompany — Unattributed Wikimedia Commons contributor, Public domain. Wikimedia Commons file page
WalthamMA AmericanWalthamWatchCompany
WalthamMA AmericanWalthamWatchCompany — User:Magicpiano, CC BY-SA 4.0. Wikimedia Commons file page
WALTHAM WATCH COMPANY FACTORY. WALTHAM IS A BUSY MANUFACTURING CITY ON THE CHARLES RIVER - NARA - 550013
WALTHAM WATCH COMPANY FACTORY. WALTHAM IS A BUSY MANUFACTURING CITY ON THE CHARLES RIVER - NARA - 550013 — Ernst Halberstadt, Public domain. Wikimedia Commons file page

No confidently matched photograph of this subject has been found yet. These photographs show a closely related record, and are not examples of the type described on this page.

Sources & references

  1. NAWCC Bulletin, articles on Waltham railroad grades
  2. Individual example provenance must be sourced per object; none asserted generically here

Where sources disagree, the disagreement is stated rather than resolved silently.