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Raymond Weil RW1212

High confidence

The caliber the brand is identified with, and constructed in a way that helps an examiner: exposed from the front and the back simultaneously, so there are two independent views of the same movement and nowhere for a substitution to hide. Its NAME is a small piece of provenance in itself — 1212 is the postal code of Grand-Lancy, the Geneva suburb where Raymond Weil is based. Worth stating precisely: the catalog earlier called this the only IN-HOUSE caliber in the range, and that overstates it. It is a collaboration between Raymond Weil's R&D and Sellita rather than a movement conceived and built alone, which is a different and more common thing. Everything else Raymond Weil sells uses outside Swiss movements, correctly so.

Specifications

Movement manufacturer
Raymond Weil
Frequency
28,800 vph (4 Hz)
Power reserve
38 hours
Winding
automatic

Architecture

An automatic caliber developed over roughly eighteen months by Raymond Weil's own R&D working with Sellita, skeletonised so that the balance — positioned at 6 o'clock — and part of the going train are visible from the dial side as well as through the caseback. The oscillating weight is skeletonised and engraved with the brand name.

Authentication notes

  • MovementProbable

    Two views of one movement

    Compare the bridge layout, balance position and visible train from the dial side and from the caseback, and check both against the published caliber. A generic movement behind a skeletonised dial fails from at least one direction and usually from both. Few watches in this catalog expose their movement this thoroughly, and the exposure is worth using.

Open questions

OpenMissing primary sourceMedium

RW1212 technical specification

What are the RW1212's dimensions, frequency, jewel count, power reserve and construction, and what is its relationship if any to an outside base?

Scope The catalog records the caliber's existence and its useful property — visible from both sides — without asserting its specification, which is not established here. Since the recommended check is to compare the visible architecture against the published caliber, having the published caliber recorded would make that check considerably more usable.

References using this caliber

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

Raymond Weil — collection specifications and limited-edition announcements

Raymond Weil SA

Accessed
2026-08-19

Cited for

This referenceHigh confidence
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Last verified: Not yet reviewed