Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial

Dual time zone with power reserve indicator - 42 mm
• Case diameter (mm): 42.0
• Case thickness (mm): 12.5
• Case lug width (mm): 22
• Lug to lug (mm): 52
• Case back: Transparent
• Case finish: Mixed
• Case metal: Stainless steel
• Dial color: Silver/White
• Front crystal: Sapphire
• Movement: Manual mechanical
• Manufacturer's limited warranty: 2 years
• Strap or bracelet: Strap
• Warranty service: Dirk Dornblueth

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WatchBuys Direct Price: $9,130.00
Availability: Temporarily Sold Out



Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial
Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial

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Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial
Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial
Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial
Dornblueth & Sohn Calibre 99.10 Weltzeit Regulator Engraved Dial
Product Details

This watch features the Dornblueth & Sohn Calibre 99.10 Reg which was both developed and created in Dirk's workshops in Kalbe, Germany.  In this calibre, Dirk included some of his most interesting complications - an in-house power reserve indicator, complete time on the center post, and a 24 hour GMT subdial.

The large hour hand and the 24 hour GMT hand are independently adjustable.  "Weltzeit" in the name means "world time" in German, referring to the addition on a second time zone on this piece.

In keeping with traditional regulator design, the dial features minute markers around the edge rather than hour markers.



To create this watch, Dirk created two bridges to house the additional gears necessary for the central seconds function, one of which is actually elevated over the other. This watch also features a hack function which completely stops the seconds hand when the crown is engaged.

As is typical in a Dornblueth watch, Dirk includes all the "good stuff" - 3/4 plate, beveled edges, screw balance wheel, swan neck regulation, engraved balance cock, screwed gold chatons, and blued screws (by flame of course, including the slots).

And now the extras. The name "D. Dornblueth & Sohn, Kalbe i./S.A." is hand engraved and not machine engraved, a virtually rarity on any watch. And all of the decoration (Côtes de Genève and the sunray finish on the crown wheel and ratchet) are all done in-house, by hand. You'll notice that the movement is rose gold in appearance - this process itself is elaborate. 

After cutting and polishing the plate, Dirk treats the surface to turn the metal a copper color. After all of the drilling and milling operations are complete, the movement itself is treated with rose gold to enhance the deep color.



The dial is made in house, including the engraving process. We can count on one hand the number of watches we've actually seen with dials produced using this technique.

This watch features a brushed and polished nickel-free steel case and the crown is signed D. Dornblueth, as is the tang buckle. 

Power reserve is 50 hours.

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WatchBuys has been working with Dirk Dornblueth and his team as their official North American distributor since his very early days.

We are honored to have been selected by Dirk to represent both his watches and his brand.

Our long association with Dornblueth & Sohn ensures that we know not only their watches, but also their manufacturing processes, movement designs and delivery timelines.

Please do not hesitate to contact us at (888) 333-4895 to speak with us about Dornblueth & Sohn watches.  We'll take the time to answer your questions in detail and to provide advice on selecting a new watch.

We visit Dirk each year at his workshops in Kalbe, Germany to stay up to date on all new models.




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