OMEGA Original Watch Movement Calibre 1152 - 25 Jewels - Speedmaster Date

OMEGA Original Watch Movement Calibre 1152 – 25 Jewels – Speedmaster Date

Name: OMEGA Original Watch Movement Calibre 1152 - 25 Jewels - Speedmaster Date
Brand: Omega
SKU: OMG1152B
Price: 350 CHF
Availability: InStock

Brand: Omega

This is an original Omega watch movement, the Calibre 1152 automatic chronograph from Speedmaster Date models. Based on the Valjoux 7750, it features a decorated rotor and is in excellent cosmetic condition. It is a complete, non-cased watch movement suitable for a period-correct restoration.

Estimated Delivery: Thu, Jun 11 – Fri, Jun 19 (Excl Sat, Sun)

... people are viewing this right now

Guaranteed Safe Checkout

CHF 350

Only 1 item(s) left in stock.

Description

OMEGA Speedmaster Date Calibre 1152 Original Watch Movement

Overview

This is an original OMEGA Calibre 1152 automatic chronograph movement, used in Speedmaster Date models from the mid-1990s onward. The movement is based on the robust Valjoux 7750 architecture, modified and finished by Omega to their specifications. It is presented as a complete, non-cased movement assembly, suitable for collectors, restorers, or watchmakers sourcing a direct replacement for a Speedmaster Date model.

The movement features a classic 7750 layout with subdials at 6, 9, and 12 o’clock, a central chronograph seconds hand, and a date window at 3 o’clock. The finishing includes overlapping circular patterns known as “œil-de-perdrix” on the plates and bridges, with the oscillating weight decorated with “Cotes de Geneve” stripes and engraved with Ω | OMEGA | 1152. This movement is graded Excellent in our Condition Grading Scale below, having been stored correctly and showing minimal signs of prior use.

As a used mechanical component, its timekeeping performance is not guaranteed to meet original factory specifications without servicing. A basic revision by a professional watchmaker is recommended prior to installation to ensure optimal function and longevity. The movement is sold as a complete unit, including the decorated rotor and all chronograph components as photographed.

Specifications

The OMEGA Calibre 1152 is an automatic chronograph movement with a lever escapement, 25 jewels, and a mono-metallic balance. It operates at a frequency of 28,800 vibrations per hour (4 Hz) and is equipped with an Incabloc shock absorber system. The movement is built on a three-plate brass base with a cam-controlled chronograph mechanism and a conventional integrated automatic winding system that winds in one direction.

The chronograph layout has small seconds at 9 o’clock, a 30-minute counter at 12 o’clock, and a 12-hour totalizer at 6 o’clock. The date function is displayed via a window at 3 o’clock, using a disc with white numbers on a black background. This is a date-only module, not a day-date. The movement is marked with 25 JEWELS | TWENTY-FIVE | SWISS and Ω | 1152 on the main plate. It features an Etachron regulator and a balance spring stud for precise adjustment.

Compatibility

This Calibre 1152 is the correct original movement for specific OMEGA Speedmaster Date models produced from approximately 1995. It is a direct fit for watches designed around this calibre and its Valjoux 7750 base. Watchmakers should verify case reference numbers, dial foot positions, and stem height compatibility with the specific watch case before purchase, as later Speedmaster Date models may use different movements based on ETA or Dubois-Depraz modules.

Notes

The article is sold “AS IS”. Please read our Warranty Policy before purchasing.
Any parts not explicitly mentioned in this description or not visible in the accompanying photographs are not included.
Colors may appear slightly different across various screens and devices so we cannot guarantee an exact screen–to–reality color match.

This OMEGA Calibre 1152 offers an authentic, period-correct movement for the restoration or repair of a Speedmaster Date watch.

Frequently Asked Questions

Which OMEGA watch models use this Calibre 1152 movement?

This movement was used in OMEGA Speedmaster Date models introduced around 1995, specifically references designed to house the Valjoux 7750-based calibre. It is not compatible with the classic Moonwatch (Calibre 861/1861) or newer Co-Axial Speedmaster models.

What is the condition of the movement and is it ready to run?

The movement is in Excellent cosmetic condition as graded. It is a used mechanical component that operates but is sold without any performance guarantees. We recommend a full service by a professional watchmaker before installation to clean, oil, and adjust it to manufacturer specifications.

Is this a complete movement assembly? What is included?

Yes, this is a complete, non-cased movement assembly as shown in the photographs. It includes the main movement with its bridges, plates, chronograph module, balance wheel, escapement, and the decorated automatic winding rotor. The movement is not missing any major components visible in the images.

Does this movement have a day function in addition to the date?

No. The OMEGA Calibre 1152 is a date-only movement by design. The date is displayed at 3 o’clock via a disc with white numerals on a black background. It does not have a day of the week complication.

What type of regulator does the Calibre 1152 use?

This movement uses an Etachron regulator system, which allows for fine rate adjustment via a movable index on the balance spring stud. This is a standard feature on many ETA and Valjoux-based calibres of this era.

Additional information

Base Movement	7750 Valjoux
Frequency	28800 A/h
Jewels	25
Power Reserve	ca. 46 hours
Complications	Chronograph, Date Window
Features	Central Second, Self-Winding, Swiss Made

Condition Grading Scale

Watch Parts Condition Guide

⌚ Watch Components Condition Guide

Professional grading scale for movements, cases, dials, crowns, crystals, straps, buckles, and steel bracelets

Component	Mint (A+)	Excellent (A)	Good (B)	Fair (C)	Poor (D)
⚙️ Watch Movements	Mint A+NOS / freshly serviced or factory new, flawless bridges, no marks.	Excellent AClean, functional, minor handling marks, no rust.	Good BRunning, may need service, visible wear on plates, keeps correct time.	Fair CRuns erratically, low amplitude, some corrosion or prior non-pro repair.	Poor DNon-running, broken parts, heavy rust, only suitable for parts.
📦 Watch Cases	Mint A+Unpolished, sharp edges, original finishing, no dings or wear marks.	Excellent ALight hairlines, unpolished or light professional polish, case shape crisp.	Good BModerate wear, minor dings, polished previously but thickness remains.	Fair CVisible dents, over-polished, light pitting, possible aftermarket parts.	Poor DHeavy corrosion, deep pitting, stripped threads, bent or missing parts.
🎨 Watch Dials	Mint A+Perfect finish, no flaws, luminous intact, printing razor-sharp, NOS.	Excellent AVery light patina, all markers present, original, visually appealing.	Good BUniform patina, minor edge wear, faint marks, printing fully legible.	Fair CVisible scratches, flaking near edges, possible touched-up markers.	Poor DSevere damage: missing indices, large paint loss, illegible printing.
👑 Watch Crowns	Mint A+Original signed, sharp logo, smooth winding, gasket fresh, water-ready.	Excellent ALight microscratches, logo clear, functions perfectly, seals effective.	Good BPlating wear on edges, logo slightly faded, threads engage well.	Fair CWorn knurling, aftermarket, some corrosion, threads stiff.	Poor DSevere corrosion, broken stem interface, non-functional, salvage only.
💎 Watch Crystals	Mint A+Flawless, no scratches or chips, OEM crystal, perfect clarity.	Excellent AMicro-scratches only visible under loupe, no chips or cracks.	Good BSuperficial hairline scratches, can be polished, no structural issues.	Fair CVisible scratches, small edge chip, clarity reduced.	Poor DCracked, shattered, heavily crazed, missing chunks, must be replaced.
🧵 Watch Straps	Mint A+Unworn, original buckle, leather supple, stitching perfect, no stains.	Excellent ALightly worn, minimal flex marks, stitching intact, clean.	Good BModerate wear, edge wear visible, usable but shows age.	Fair CCracking leather, loose stitching, stretched holes, cosmetic flaws.	Poor DBroken, torn, extreme stiffness, non-functional, replacement needed.
🔗 Buckles (Tang/Deployant)	Mint A+NOS finish, logo crisp, perfect closure, joints like new.	Excellent AMinor surface wear, logo fully visible, mechanism smooth.	Good BVisible scratches, light plating wear, clasp secures properly.	Fair CHeavy wear, logo faded, minor rust, function slightly affected.	Poor DBroken hinge, severe corrosion, cannot hold strap, unserviceable.
⛓️ Steel Bracelets	Mint A+Unworn, full links, protective stickers, perfect articulation, no stretch.	Excellent AMinor hairlines on clasp, very light stretch, original finish preserved.	Good BModerate stretch, light scratches, clasp locks securely.	Fair CNoticeable stretch, deep scratches, weak clasp closure.	Poor DExcessive stretch, broken links, clasp broken, unsafe for wear.

⚡ Grading based on industry standards • Mint = as new / NOS • Excellent = light wear • Good = honest wear • Fair = functional with flaws • Poor = needs restoration

SKU: OMG1152B Categories: Basic Movements, Watch Movements, Watch Parts Tags: 25 Jewels, 7750 Valjoux, Automatic Movement, ETA 7750, Omega, Omega 1152, OMEGA Watch Movements, Self-Winding, SpeedMaster, Watch Movements Brand: OmegaGroups: Movements, Omega, Speedmaster

Browse Categories

OMEGA Original Watch Movement Calibre 1152 – 25 Jewels – Speedmaster Date

Shipping

Return

Help