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The Coronado Watch by Thomas Gref


Coronado - silver roman dial

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Coronado - black roman dial


Coronado - silver arabic dial    

Side Views

Coronado - back view


The Coronado has a  finely detailed case with a classic style.  The bezel has a satin brushed finish, which provides a nice contrast to the mirror polished coin-edge detail around the side of the case.  The case measures 43 mm in diameter, 11.2 mm thick, and takes a 22 mm strap.  A sapphire crystal is used on top, while the screw-back features a mineral crystal to view the movement.  The Coronado comes on a strap that is hand-made in Germany of fine Italian alligator grained calfskin. 

The Coronado has three dial options as shown.  The two roman dials have a guilloche textured background, with an applied ring printed with roman numerals.  The third option is an arabic dial which is silver and is finished in a fine  contrasting texture.

The automatic movement is a Swiss-made ETA 2824-2, which features 25 jewels, 28,800 BPH (beats per hour), hacking, and a quickset date. This particular movement is one of the highest grades of the ETA 2824-2 .  The movement has a durable rhodium finish and is highly decorated with perlage on the main plates, and geneva stripes on the rotor. The power reserve is 40 hours.  To learn more about this movement, click here to see the 'Movement' page.

These watches carry a one-year warranty.  All Thomas Gref watches come with a 5 day money back guarantee.

Price: $1150

To place an order, please call 520-818-3382.  PayPal, Visa, and MasterCard accepted. 
Add $15 for shipping via Insured Priority US Mail.


Coronado - Mokume 'Woodgrain'

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Coronado -
Mokume 'Lava'


The Coronado watch is now available, in limited numbers, with a mokume-gane dial.

Mokume-gane is an ancient technique developed by the Japanese that creates unique patterns in metal.  In Japanese, mokume-gane means "wood grain metal".  Alternating layers of metal are diffusion bonded into a single billet.  The billet is hammered and manipulated to expose the layers in the metal.  This technique is very similar to damascus steel, commonly used in knives and swords. 

There are two varieties of mokume-gane available on the Coronado.  One version uses only copper and silver, which has a traditional ‘woodgrain’ appearance.  The second version, called 'Lava', adds two more alloys to the mix, and has a random pattern with slightly more color variation. 

These dials are entirely hand made, and no two are exactly alike.  The raw material is hand formed, each dial is cut out by hand, and is hand finished.  A patina is hand-applied to each dial to bring out the color variations.  They are then lacquered to protect the fine finish. 

Each one of these watches is individually numbered on the dial. 

They come on a genuine Alligator watchstrap.

Price: $1700


Because many people are interested in how watches are designed and produced, I wrote the following article which describes how I created the Oceanic dive watch.  Follow the link below to read this article.

Article:  How to Design and Build a Custom Watch

Thomas Gref   -   AWI Certified Master Watchmaker   -   BS Mechanical Engineering

PO Box 69151   -   Tucson, AZ  85737   -   USA   -   ph 520.818.3382