The Basics

The Robert Mühle Auf/Ab GOLD reveals a quality that is perhaps not readily known: namely the fact that the family company is the only watch manufacturer in the German town of Glashütte that is still owned by a long-established local family. That is why with an especially refined version of their special edition they would like to honour the entrepreneurial spirit of their forebears – and their upholding the family tradition of precise measurement. It was not always easy: A Great Depression, two expropriations and 45 years of Socialism repeatedly challenged the family’s will to persevere. That is why the family-owned business was re-established for a third time in 1994. And thus in the year 2014 they are celebrating not only the 145th jubilee of the company’s founding by Robert Mühle, but also 20 years of the company “Nautische Instrumente Mühle-Glashütte”. The latter is the occasion for the Robert Mühle Auf/Ab GOLD edition with a case made of 18 carat red gold, limited to 20 pieces. Reference M1-11-25-LB has a white enamel dial and is fitted a black crocodile leather strap

Brand: Mühle Glashütte
Family: Robert Mühle
Reference: M1-11-25-LB
Name: Robert Mühle Auf/Ab GOLD White / Strap
Produced: 2014
Limited: Yes, 20 units

Below is a detailed look at Mühle Glashütte’s model M1-11-25-LB from Robert Mühle watch family, including the price, case details and movement features.

Mühle Glashütte Robert Mühle M1-11-25-LB

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The Details

Mühle Glashütte’s Robert Mühle Auf/Ab GOLD White / Strap (M1-11-25-LB) was originally released in 2014. This watch features a hand-wound movement beating at a frequency of 21600 bph (3 Hz) to provide a 56-hour power reserve when fully wound.

The Case

The stainless steel case measures 36.6mm in diameter and roughly 8.35mm thick, with 18mm lug width. The round case is paired with a white color dial with alpha-shaped hands, and a roman numerals hour markers and minute track, covered by a sapphire glass. Mühle Glashütte’s Robert Mühle model M1-11-25-LB is water resistant up to 100 meters (328 ft). A display caseback is over the back of the watch case.

Material: Stainless steel
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 36.6mm
Height: 8.35mm
Lug Width: 18mm
W/R: 100

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Robert Mühle M1-11-25-LB movement is a powered by caliber RMK 01 GP made by Mühle Glashütte. The 29-jewel hand-wound movement is 36.6mm in diameter. Its balance wheel oscillates at 21600 semi-oscillations per hour or 3 Hz. This movement offers a 56-hour power reserve.

Type: Hand-Wound
Brand: Mühle Glashütte
Caliber: RMK 01 GP
Base: ETA 6498-1
Display: Analog
Diameter: 36.6mm
Jewels: 29
Reserve: 56 hours
Frequency: 21600 bph
Time: Hours, Minutes, Small Seconds
Additionals: Power Reserve Indicator

The Price

How much does the Mühle Glashütte’s Robert Mühle M1-11-25-LB cost? This watch was introduced in 2014 and has been in Mühle Glashütte’s collection for around . This watch is a limited edition with just 20 pieces released. As with most luxury watches, the price of depends on the availability and demand.


For more information, visit Mühle Glashütte online.


  • Brand: Mühle Glashütte
  • Model: Robert Mühle Auf/Ab GOLD White / Strap
  • Reference Number: M1-11-25-LB
  • Limited: Yes, 20 units

Case & Dial:

  • Material: Stainless steel
  • Glass: Sapphire
  • Back: Display
  • Diameter: 36.6
  • Thickness: 8.35
  • Lug Width: 18
  • Dial Color: White
  • Indexes: Roman Numerals and Alpha-shaped hands
  • Water Resistance: 100 meters


  • Winding: Hand-Wound
  • Brand: Mühle Glashütte
  • Caliber: RMK 01 GP
  • Display: Analog
  • Diameter: 36.6mm
  • Jewels: 29
  • Power Reserve: 56 hours
  • Frequency: 21600 bph
  • Functions: Hours, Minutes, Small Seconds

About Mühle Glashütte

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