IWC Watch Repair & Service in London
Restore your IWC Schaffhausen to its certified engineering specification at our London workshop — Pellaton winding overhaul, soft iron cage attention, in-house calibre servicing and a written 12-month guarantee on every timepiece we sign off.
IWC was founded in 1868 in Schaffhausen by the American watchmaker Florentine Ariosto Jones — uniquely positioned on the German-speaking side of Switzerland and shaped from the start by an engineering rather than a decorative tradition. That heritage is felt in every Schaffhausen calibre, from the Pellaton bidirectional pawl winding system patented in the 1950s to the modern 52000 and 59000 series with their 7-day and 8-day reserves. Preserving the precision IWC built those movements around depends on disciplined periodic servicing — lubricants harden inside the Pellaton mechanism, soft iron cages collect particles, and rate drifts before the wearer feels it.
Whether you wear a vintage Mark XI flieger built to the British Ministry of Defence's 6B/346 specification or a recent Big Pilot 43 driven by the in-house calibre 82100, our London bench treats each reference with a service protocol matched to its construction. Every IWC is overhauled, regulated and pressure-certified in-house, with a single 12-month written guarantee covering the work.
Every IWC service includes the following:
A complete IWC service at Martin Oliva is a full calibre and case revision, not a cosmetic refresh. Each watch progresses through ten dedicated workshop stages before it is signed off and released back to its owner.
Reference & Calibre Identification
Caseback serial, model number and calibre family are cross-referenced against the Schaffhausen archive before disassembly so the correct service sheet is applied to the calibre in front of us.
Soft Iron Cage Removal & Inspection
For Pilot, Ingenieur and other antimagnetic references the soft iron inner case is dismantled and inspected; magnetic shielding integrity is recorded before the movement is exposed.
Calibre Strip & Pellaton Disassembly
Bridges, balance, gear train and the Pellaton bidirectional pawl winding mechanism are separated and laid into an indexed tray so each component receives individual treatment.
Multi-Stage Solvent Cleaning
Components pass through a stepped solvent ladder, with the Pellaton cam and pawls treated in a dedicated cycle to remove the hardened lubricant that this system is most prone to retain.
Schaffhausen-Spec Re-Oiling
Pivots, jewels, the escapement and the Pellaton contact surfaces receive the exact grade and volume of oil or grease specified by IWC for each calibre, applied under microscope.
Mainspring & Barrel Renewal
The mainspring is replaced as standard practice on every full service, and on 7-day and 8-day calibres the second barrel is also inspected and lubricated before the full power reserve is recalibrated.
Case, Bezel & Bracelet Refinishing
Steel, titanium and Ceratanium cases are hand-restored to original brushed and polished geometry; ceramic Top Gun cases are inspected for chips rather than refinished, as ceramic cannot be hand-polished.
Dial, Hand & Crown Inspection
The dial, applied indices, signature lume hands and crown function are inspected under magnification; specification-correct replacements are sourced only where original parts cannot be conserved.
Depth Pressure Recertification
The resealed case is verified against the reference's original water-resistance rating — up to 200m for Aquatimer and Big Pilot Top Gun references — through dry-air and wet pressure cycles.
Six-Day Power-Reserve Trial
The serviced calibre is observed across five positions over six days, with rate, amplitude, beat error and full power-reserve duration all required to settle within IWC specification before sign-off.
IWC Service Prices including VAT
All figures below include VAT and cover the complete ten-stage protocol. "Modern" refers to references in current or recent production; "Vintage" applies to discontinued calibres including the Mark XI series, vintage chronograph calibre 79xxx and earlier Schaffhausen movements requiring period-correct sourcing.
All prices include VAT and the 12-month written guarantee. Sapphire crystal replacement, soft iron cage components, dial renewal, full bracelet refinishing and any restoration of the Pellaton mechanism beyond standard service items are quoted separately following the workshop inspection.
The Service Pathway
Four straightforward stages carry your IWC from the first enquiry to its return on your wrist.
Initiate
Share your reference number and any concerns about rate, power-reserve duration, water-resistance or chronograph behaviour. We respond with an indicative price and arrange insured collection or a private appointment.
Audit
Your IWC is examined by a senior watchmaker, performance and power-reserve are captured on the bench, and a written diagnostic plus quotation is shared with you for approval before any work begins.
Refit
Once you sign off, the watch enters our ten-stage protocol in the protected workshop area. Typical turnaround sits between five and eight weeks for 7-day and 8-day calibres, given the longer trial period.
Ship
After certification, your watch is packed in protective storage with its service certificate, pressure-test results and 12-month written guarantee, returned via insured courier or collected from the showroom.
Entrusted with Schaffhausen Engineering
In-House Mastery
Our watchmakers have benched the full IWC catalogue from the modern in-house 32000, 52000 and 59000 series back through the Valjoux-based 79xxx chronograph movements, and our senior bench retains specific Pellaton experience.
Military Heritage
Vintage Mark XI servicing — including the cal. 89 movement and the soft iron cage that defines the Pilot family — is part of our regular workshop volume, alongside the modern Mark XX and Top Gun references in ceramic and Ceratanium.
Confidential Care
Every IWC received at our workshop is registered against its full open-market valuation on intake, photographed at each stage and returned via tracked insured courier or by private appointment.
IWC Models We Service
From the latest Big Pilot 43 and the reissued Ingenieur 40 back to vintage Mark XI references built to British military specification, our London bench is equipped to service every IWC family.
IWC Service FAQs
How often should an IWC be serviced?
Modern IWC references generally benefit from a full service every five to seven years, with 7-day and 8-day calibres slightly closer to the upper end of that interval and chronographs slightly closer to the lower. Daily-worn pieces, watches showing rate drift, premature power-reserve drop-off or any moisture under the crystal should be inspected sooner; a quick bench check will confirm whether intervention is needed now.
Does the Pellaton winding system in my IWC need special attention?
Yes — and it is one of the most important reasons to choose a workshop with specific IWC experience. The Pellaton bidirectional pawl mechanism uses ruby cams and tiny pawls that wear in a distinctive pattern and require dedicated cleaning and lubrication during service. Our senior bench dismantles, treats and reassembles the Pellaton system on every full overhaul rather than treating it as part of the standard movement, and recently produced calibres also use ceramic pawls and cams that we treat to their separate specification.
Do you service vintage IWC pilot watches with the Mark XI and earlier military calibres?
Yes. Vintage Mark XI servicing — including the cal. 89 manual movement and the W.W.W. ("Watches, Wrist, Waterproof") pre-Mark military pilot references — is regular work at our senior bench. Period-correct component sourcing, dial conservation and original radium/tritium handling are part of our standard vintage workflow.
Can you service the soft iron antimagnetic inner cage on Pilot and Ingenieur references?
The soft iron inner case used in Pilot, Ingenieur and other antimagnetic IWCs is dismantled and inspected on every full service. We check for distortion, replace damaged ferrules and re-fit the cage under controlled conditions to preserve the original antimagnetic protection — typically rated to 80,000 A/m (around 1,000 gauss) on classic Mark references.
How long does an IWC service take?
A standard 3-hand or Mark XX service is typically completed in four to six weeks. Big Pilot 7-day, Portugieser 8-day and chronograph references usually require six to nine weeks because of the longer power-reserve trial. Perpetual calendar and grand complication work is quoted on a piece-by-piece basis after the diagnostic inspection has been signed off.
Can I send my IWC from outside the United Kingdom?
Of course. We routinely receive IWC watches from clients across the UK, mainland Europe, the Gulf, North America and Asia. Contact us before shipping and we will guide you through insured tracked couriers, declared values, and the documentation required for a round trip to your country of residence.
