Amazing Corum Admiral Cup Chrono Repair

The perfect companion for an Admiral or a skipper sailing with friends - perfect fixed by our watchmakers

Corum was established in 1955, it is still a relatively young Swiss watch brand by Swiss standards. They rapidly made a name for themselves by producing high-quality timepieces and creating very recognizable signature collections.

Their oldest signature collection is the Admiral’s Cup. It was launched in 1960, barely 3 years after the first Admiral’s Cup International Yacht Race. It continues to be produced successfully up to today.

The Admiral’s Cup Chronograph 4xxx mm case is powered by Corum’s Caliber Ref 7752. It is a self-winding mechanical chronograph movement with a COSC chronometer certification for its reliability and accuracy.

The Corum Admiral Cup beautifully displays hours, minutes, seconds, and date.

This movement offers a very handy chronograph function to be used for yacht racing and works at 28,800 vibrations/hour with a 42-hour power reserve.

One of the more recognizable features of this collection is the use of nautical pennants as the hour markers, also these flags represent the numbers supposed to be on each marker as internationally used and recognized for code signals.

Another distinctive feature is their unique 12-sided case, boasting an impressive 44mm diameter as a symbol of strength. It is made of 18K rose gold, a timepiece easy to recognize, and a good conversation piece in any given meeting.

Another important feature to be mentioned is the exclusive Corum lockout system that gives this watch secure and easy-to-use locking push buttons for the chronograph function.

The screw-down crown and push buttons are engraved with the Corum key logo.

This watch has a convex glare-proof sapphire crystal, and also a sapphire crystal case back so it is very easy to admire the awesome movement that powers this movement at all times.

The watch features a black alligator strap with an 18 carat rose gold tang buckle.

It is the best-selling collection made by Corum up to now.

This service and overhaul process will take approximately 4 to 6 weeks.


We will start with disassembling the watch to its basic components and give the case and tang buckle to our polishers to make it look almost like new.

Amazing Corum Admiral Cup Chrono Repair
The perfect companion for an Admiral or a skipper sailing with friends - perfect fixed by our watchmakers

Before Gray and Sons Watch Repair


One of our 6 Swiss-trained master watchmakers will start working on the movement, taking the movement apart. Then we will clean the movement using 3 different cleaning solutions. These will remove all dried lubrication, small broken parts, all other debris and dirt built up through the years.


During Gray and Sons Watch Repair


Each individual component will be closely examined even using an electronic microscope if needed, we will adjust part by part, and replace any if necessary, so the movement will run accurately and look perfect. This includes re-lubrication of the complete movement with special oils.


After Gray and Sons Watch Repair


Once the lubrication process is finished, we will assemble the watch and add new lubrication. We will replace all the gaskets to make sure that the watch is water-resistant and has an appropriate working amplitude, is accurate, the self-winding is working and the power reserve is as originally designed, to last 42 hours. We will do all these by hand, also using computers, testing machines, and special tools specially designed for each task.


After Gray and Sons


Once we finish servicing your watch and the polishers have done their magic, it's time to quality control your timepiece. We will put it on a winding wheel, which simulates wrist motion. Our watch specialists will keep it in the wheel for up to 10 days for quality control, regulation of the movement, checking the automatic and Chrono functions and winding in multiple ways, as well as checking the power reserve after that.

We also test for timekeeping so when it leaves our boutique, it leaves almost like when it left the factory following the manufacturer’s specifications. We will also check the water resistance in 2 different specially designed machines so the watch will be safely used while boating and in seawater.


After Gray and Sons repair


After the service is done, your watch will come with a 12-month warranty.

Corum Admiral’s Cup, Detailed Description
A brief story about Gray & Sons Inspired Jewelers and Watch Experts

After Gray and Sons watch repair

Corum Admiral’s Cup, Detailed Description

Brand: Corum.

Model: Admiral Cup Chronograph.

Watch Style: 18 carat Rose Gold Men’s Luxury Sport Watch.

Reference: 689989.

Case: 12 sided, 44mm, 14.8mm thick.

Bezel: Smooth.

Screw-in Crown: Yes.

Dial: Factory original black dial, with rose gold hands and white luminescence, rose gold Arabic numerals, rose gold window frame for the day, with minute markers around the rim and 3 subdials for minutes, hours, and seconds resembling a compass.

Date: Yes.

Crystal: Scratch-resistant anti-reflective sapphire crystal.

Case back: Open back with Scratch-resistant anti-reflective sapphire crystal.

Movement: Automatic self-winding.

Caliber: 7752.

Jewels: 27

Complications: Date and chronograph.

Water Resistance: 5 ATM / 50 meters.

Bracelet: Original alligator strap with original 18 carat Rose Gold tang buckle.

Circa: 2010

MSRP: $31,700

Swiss Made

A brief story about Gray & Sons Inspired Jewelers and Watch Experts

For over 40 years, the focus of this family-owned and operated business has been selling meticulously restored & like-new condition Certified Preowned Watches and one-of-a-kind estate jewelry pieces.

We are always acquiring new watches and jewelry pieces, so please check our website frequently or sign up for our free monthly catalog, it will give you a good sense of market values and what is trending in our industry and it's free!! If you have an item that you are interested in selling, we can help sell your piece too! We have sales specialists that are fluent in Spanish, French, Polish, and Russian.

We have six in-house Swiss-trained watchmakers with over 150 years of combined experience to handle all your watch repairs and service issues.

If you have a watch that is not working as it once did, send it to us. You will be amazed at your “as new looking” watch.

Our Miami Beach showroom boutique is located across from the world-renowned Bal Harbour Shops.

If you are ever in the area please stop by, we would love to meet you and show you our store.

Hope this brief intro to our company makes you feel reassured that you are dealing with a reputable, long-standing and honest company. Your watch will be in good hands. No job is too small or too big for us!

#1 Specialist on Corum, Zenith, Rolex, Cartier, Patek Philippe, Breitling, Audemars Piguet, Piaget, Omega, JLC, IWC, Hublot, BlancPain, Ulysse Nardin, GP, and all major luxury Swiss brands.

Visit Gray and Sons Jewelers is a one-stop source for all your luxury watches and high-end jewelry needs throughout Florida, especially in Miami, Coral Gables, Miami Beach, Sunny Isles, and Fort Lauderdale. Gray and Sons has an excellent reputation with many customers in New York, Massachusetts, California, Texas, Nevada, Pennsylvania, and Chicago.

Don’t hesitate to contact Gray and Sons customer service and have a look at the helpful FAQ on the website

#1 Specialist on Corum, Zenith, Rolex, Cartier, Patek Philippe, Breitling, Audemars Piguet, Piaget, Omega, JLC, IWC, Hublot, BlancPain, Ulysse Nardin, GP, and all major luxury Swiss brands.

Come, call or click for the best prices and customer service second to none.

We will exceed your expectations.