Today we are proud to offer this rare IWC made for the Japanese market encased in platinum and powered by the superior caliber 89 IWC.

While the vast majority of these were made in stainless steel with some also being made in 18K gold and a few gold plated cases, only very few were made in platinum.

Powered by one of the most highly-regarded manually wound movements ever made, talked about in the same sentence as Pateks, the watch is rich in technical details.

For those unfamiliar, the caliber 89 movement was designed by IWC's renowned technical director Albert Pellaton.

It is encased in the watch's original contract case made for IWC for the Japanese market by Isomura and correctly stamped on the inside. The case has a balanced design with semi claw lugs.

We have developed quite a bit of expertise in these rare platinum Isomura IWCs, having owned well over a dozen. This is the earliest one we have even seen, and the first that is only engraved with the Isomura case number, likely due to how early it is.

It has all of its original parts and has just finished a true expertly done restoration. It presents in gorgeous condition.

Its very rare platinum case presents as mint. It is beautifully engraved on the back with a Japanese flower done at the time of the original sale or in vintage times.

Its matte black dial has been meticulously restored - its printing could pass as IWC factory done to the naked eye.

A Master Watchmaker has freshly overhauled its movement.

It is running extremely strong and true, keeping time on par with a brand new IWC in our testing recording position.

For the finishing touch, we have equipped it with a brand new leather strap and aftermarket IWC style buckle making it ready for immediate enjoyment.

Included with the purchase is a one-year warranty on the movement and its function, a custom printed Connoisseur of Time Certificate of Authenticity, and a new timing certificate.

You won't be disappointed - a very rare more than six decade old IWC that presents essentially like new on the wrist!

Your watch is important to us, and we will take care of it for its lifetime. We provide the best after sale care in the business with an extremely experienced team of four Master Watchmakers all of whom each have over thirty-five years of experience and a large number of parts. One used to be the watchmaker for an authorized Rolex dealership and was given special training by Rolex at their Beverly Hills Service Center. He also has done authorized watchmaking work for the Richemont Group's Service Center, IWC Schaffhausen, and many others.

Manufacturer: IWC
City of origin: Schaffhausen, Switzerland
Serial no.: 1,426,514
Year built: 1957
Case no.: 136,680
Functions: Hours, Minutes, Automatic, Sweep Seconds
Designed for: Men 
Dimensions: slightly over 33mm wide (without crown), 42.5mm lugs tip-to-tip
Case condition: Presents as mint
Case markings (outside): Isomura for IWC case number, engraved with Japanese flower
Dial: Matte black, signed International Watch Co. Schaffhausen, faceted baton indexes, outer minute track, expertly refinished
Hands: Original, "dauphines"
Jewels: 21 rubies
Band: It has been equipped it with a brand new leather strap and aftermarket IWC style buckle making it ready for immediate enjoyment.
Crystal type: Acrylic, excellent condition
Movement: IWC caliber 89, manually wound, rhodium plated, fausses cotes decoration, shock resistant, straight-line lever escapement, monometallic balance, Breguet balance spring, index regulator
Serviced: A Master Watchmaker has overhauled it.
Timed: Timed to precision on a state-of-the-art computerized system. It is running extremely strong and true, keeping time on par with a brand new IWC in our testing recording position.
Warranty: 1-year international warranty. Please email concierge@cotwatches.com for details. Your watch is important to us, and we will take care of it for its lifetime. We provide the best after sale care in the business with an extremely experienced team of four Master Watchmakers all of whom each have over thirty-five years of experience and a large number of parts. One used to be the watchmaker for an authorized Rolex dealership and was given special training by Rolex at their Beverly Hills Service Center. He also has done authorized watchmaking work for the Richemont Group's Service Center, IWC Schaffhausen, and many others.
Box/Papers: BOX - Connoisseur of Time watch presentation box; PAPERS - Custom printed Connoisseur of Time Certificate of Authenticity; New timing certificate
Returns: 7 days full refund. 100% satisfaction guarantee

We offer a 100% satisfaction guarantee for all of our watches. If you are in any way unsatisfied with the watch we will fully refund the purchase price anytime within 7 days after the watch has been received. Our goal is to exceed our client's expectations throughout the buying experience.

All watches are packaged carefully and mailed double boxed in specially constructed, reinforced shipping boxes designed for high value items. All watches are sent fully insured with signature required. Most of our domestic shipping is done through FedEx. At times we will also use USPS Express Mail, and we can accommodate most requests for your preferred carrier. International shipments are sent USPS International Express Mail or FedEx.

The purchase price will be the declared value of the merchandise on any required customs forms. The payment of all customs duties, tariffs, and taxes are the responsibility of the buyer.

Also note that water resistance of vintage watches can no longer be guaranteed and is not covered under the watch's warranty. We do not recommend getting a vintage watch wet, even one that was originally designed to be waterproof.

To get an idea of how this watch will look on the wrist, please use the Watch Sizing Guide

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