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Vostok 2431

Probable

A true 24-hour movement, made for polar and submarine use where day and night give no cue. The check is the one described on the 2426 and takes a few minutes of observation rather than any tooling.

Specifications

Movement manufacturer
Vostok
Jewels
31
Winding
automatic
Complications
24-hour main display · Date

Architecture

Automatic on which the main hour display is a 24-hour scale — the hour hand makes one revolution per day.

References using this caliber

Provenance of this record

Sources & Evidence

Contemporaneous sourceOriginal catalog

Chistopol Watch Factory (Vostok) catalogues and parts listings

Chistopol Watch Factory / Vostok

Accessed
2026-08-18

Cited for

This referenceProbable

Last verified: Not yet reviewed