· 42mm · caliber Glashütte Original Cal. 94-03: in-house automatic, 48h PR; flying tourbillon of the kind Alfred Helwig taught at the Glashütte watchmaking school from 1920, carried on a cantilevered bridge with no upper cock
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Movement tier: unclassified · caliber Glashütte Original Cal. 94-03: in-house automatic, 48h PR; flying tourbillon of the kind Alfred Helwig taught at the Glashütte watchmaking school from 1920, carried on a cantilevered bridge with no upper cock · 48h power reserve (2 days)
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
42 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.
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An edition of 25. At that volume the brand can account for every example, so the first call is to Glashütte Original rather than to a loupe.
Known issues in the market
Two Glashütte Original tourbillons carry Alfred Helwig’s name and they are different watches. This one is 42mm in white gold with the tourbillon on the dial side under a Panorama Date. The Alfred Helwig Tourbillon 1920 is 40mm in rose gold and keeps its tourbillon on the movement side, where the dial reads only "Tourbillon" in the seconds register.
A flying tourbillon has no upper bridge. If there is a cock or bridge arching over the cage, it is not a flying tourbillon and not this watch.
Edition numbering belongs on the dial. A watch of this kind arriving without papers is a question for the brand before it is a question of price.
Area
What to check
What is correct
Red flag
dial
Tourbillon cage mounting
The cage is cantilevered from below with nothing crossing it. Alfred Helwig taught this construction at the Glashütte watchmaking school from 1920, which is what the edition commemorates
A bridge or cock spanning the cage, which is a conventional tourbillon
dial
Panorama Date at 12
Two digits level on a single plane with no dividing bar between the discs
A visible divider, or digits at different heights
dial
Edition numbering
Numbered within a run of 25, matching the papers
No number, or one above 25
case
Size and metal
42mm in white gold
A 40mm rose gold case, which is the Alfred Helwig Tourbillon 1920, a different reference entirely
Common legitimate replacements
Nothing should have been replaced on a watch this rare. Anything that has been is a direct question for the brand.
A tourbillon of this construction is serviced by Glashütte Original, not by a general watchmaker.
Expert resources: Glashütte Original publishes the reference on its own site, and Monochrome covered the edition at launch. With 25 pieces made, the brand can confirm a serial and its history, which settles the question more definitively than any external check.
