A Minimal Change for Maximal Speed - A Unique Universal Geneve Compax
May 12, 2025 A Minimal Change for Maximal Speed - A Unique Universal Geneve Compax Marcus Siems @siemswatches Collector, Author, Data Analyst [Highlights] Universal Geneve -...
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A Watch Dealer's Diary Part II - How Many Watches are Sold at Goldammer?
Apr 10, 2025 A Watch Dealer's Diary Part II - How Many Watches are Sold at Goldammer? Marcus Siems @siemswatches Collector, Author, Data Analyst It is that...
Decades of Technical Evolution - Henri Gerber & His Opus at Omega (1928-60s)
February 26, 2025 Decades of Technical Evolution - Henri Gerber & His Opus at Omega (1928-60s) Marcus Siems @siemswatches Collector, Author, Data Analyst [Highlights] Who was...
More Than A Typo - The Curious Case of The Universal Geneve Contax
February 21, 2025 More Than A Typo - The Curious Case of The Universal Geneve "Contax" Marcus Siems @siemswatches Collector, Author, Data Analyst [Highlights] A...
What Are They Made Of? - A Historic Guide to Watch Case Materials
Who actually makes all these watch cases? Today it's the manufacturing brand but over most of the last Century that question couldn't be answered that easily. Particularly for steel watches...
Mystery Steel Case - How to Know Who Made It?
Who actually makes all these watch cases? Today it's the manufacturing brand but over most of the last Century that question couldn't be answered that easily. Particularly for steel watches...
Bring the H.E.A.T. - Are You A Horological Historian, Expert, Analyst or Technician?
How much H.E.A.T. do you bring? H.E.A.T. stands for Historian, Expert, Analyst and Technician and should describe you and your personal watch journey. January 22, 2025 Bring the H.E.A.T. -...
"The Neuchatel Project" - A Guide to the Beta 21, the First Swiss Quartz Watches
Quartz is cheap and basic? How come in 1970 a Quartz watch could easily cost you as much and often more than the most expensive time-only piece in a brand's...
Wolf in Sheep's Clothing - The IWC Cal. 89 'Zwyro'
As you all may know by now, we at Goldammer are big fans of IWC's Caliber 89. Yet, as much examples as we have handled so far, a 'Zwyro' Cal....
The Rolex Datejust "Obsidian" - What's the Real Deal?!
Over the last years the Rolex Datejust "Obsidian" dial has become the hottest Rolex 'stone dial'. However, as enchanting as their appearance is, the story of these dials has been...
Golden Rationale - How's the Market for the Patek Philippe Ellipse Today (Part 2)
In Part 1 we established that the Golden Ellipse was just revitalized in 2018 through Patek Philippe's continued efforts to bring the collection into the 21st Century. However, what we...
Golden Rationale - Quantifying the Success of the Patek Philippe Ellipse (Part 1)
The 'Golden Ellipse' is a 50+ year classic. Fine craft, exquisite and new materials, and a redefined aesthetic made the 'Golden Ellipse' collection an imminent success. Was the Ellipse always...
The Polerouter Super - UGs Explorer with a 20 Year Origin Story
It might feel like every story about UGs Polerouter has already been told... But this is not just the story of the "most waterproof" Polerouter execution but also of John...
Cellini Renaissance - Rolex's 1970s Interpretation of the Octagon
The now defunct Rolex Cellini collection wasn't exactly the middle of the horological party the last couple of years. Sitting behind the Oyster-cased sport stars in the catalogue the Cellini...
French Style - Verger Frères & the Roaring Twenties
Verger Frères were master artisans working with and supplying the greatest of their time - including Vacheron Constantin, Cartier, Boucheron, Tiffany's, etc. But I guess if you haven't been extremely...
Genuinely Unique! The Story of the Jean-Pierre Ecoffey Chronograph Prototype for Patek Philippe
In the world of Patek Philippe collecting you rarely find something truly unique... Not a combination of dial color, hour marker and case material but a genuine unmistakable one-of-a-kind design....
