The Moritz Grossmann Hamatic, and its “Modernly Old-School” Self-Winding Hammer System

By rolex
April 16, 2021
10 min read

Last year, German producer Moritz Grossmann, one of Glashütte’s best agents, introduced its extremely close to home vision of an automatic watch, the Hamatic . Amazing, precisely captivating yet a model, the watch required a couple of more months to be idealized. In any case, here is the last form of the Moritz Grossmann Hamatic, presently without patterns on the dial yet at the same time with similar alluring development and its remarkable self-winding hammer system. 

An tribute to early perpétuelle watches

The entire purpose of the Moritz Grossmann Hamatic obviously isn’t noticeable on its habillage – it does, in fact, appear as though an exemplary hand-wound, time-just piece. All that this watch represents lies in its development, and specifically, its deliberately anachronic self-winding system. This watch is a tribute to the soonest automatic watches, watches made around 1780 highlighting an alleged “hammer” or “guard” winding mechanism.

For hundreds of years, watches have been mechanical (until the approach of the quartz/battery-fueled in the last part of the 1960s), implying that their developments depended on the energy given by an origin. Also, similar to each sort of spring, in the event that you need it to deliver its force, you need to wind it first. It was at first done physically, by hand-winding the development because of a key or later a crown. However, a few watchmakers began to feel that it would be fairly advantageous to have a watch running interminably, without the need to wind its mainspring.

There is still some discussion concerning who really created the primary automatic development, which is still frequently – however wrongly – credited to Swiss watchmaker Abraham-Louis Perrelet. As indicated by industry writer Gregory Pons (in French) , in view of examination done by antiquarian Joseph Flores, the main automatic development ought to be credited to Belgian watchmaker Hubert Sarton, in 1778.

Picture by Antiquorum Image by Breguet

Soon after, ace watchmaker Abraham-Louis Breguet would embrace his first endeavors to create an automatic watch. Subsequent to considering the idea, he made the perpétuelle development – a French word alluding to the unending movement of the watch. Breguet’s first watches comprising this component were created when 1780, with the case of the Perpetuelle No.1 – 8/82. This watch is one of the most established known Breguets with this self-winding system, and furthermore the most established enduring Breguet watch to date. It showed up available in 1997, at an Antiquorum sell off .

Now, let’s get somewhat more specialized. While today’s automatics depend on a focal rotor (99% of the creation), a miniature rotor or a fringe rotor , back in 1780 the idea was somewhat unique. Recollect that a pocket watch was worn in a pocket, implying that it was pretty much in a static situation (rather than the steady developments of the wrist enlivening a wristwatch). Hence, the most ideal choice to stack the spring by utilizing the development of the wearer was Breguet’s system, a hammer-winding instrument – essentially, a swinging three-sided mass situated on a similar hub as the wearer’s body so it could profit by the smallest developments, particularly when strolling, so the hammer was swinging from left to right, and along these lines stacking the origin. Be that as it may, this gadget brought about stuns being moved to the entire movement.

This is the place where Moritz Grossmann found the motivation for its first automatic watch, the Hamatic, yet with a greatly improved hammer-winding mechanism.

The development of the Moritz Grossmann Hamatic

Let’s start our audit of the Moritz Grossmann Hamatic, back to front, by taking a gander at its development – in light of the fact that, let’s be straightforward, this is the place where this watch establishes the most connection. Inside the Hamatic, and now altogether covered up on the dial side, is surely one of the most pleasant automatic developments available, and genuinely, the just one of its class.

The Caliber 106.0 isn’t dependent on the current types 100.X, the hand-wound development found in the GMT . The winding component isn’t added on top of a manual type however incorporated into it. So what’s that…? Indeed, the Hamatic development is a tribute to these collectible, early automatic hammer types created by Breguet and different watchmakers. It is additionally a purposeful erroneous date since this kind of self-winding system (at any rate, the old renditions) is undeniably less proficient and results in stuns harming the development, leaving the stage free for the obviously more effective rotor. This was stage one, since this development isn’t simply a tribute however carries the idea into the 21st century.

The base for the automatic-hammer instrument is the enormous part that covers the development primarily: the swinging hammer. While a rotor pivots on 360°, this part depends on more modest motions, from left to directly on a generally short bend, to stack the heart. The hammer, a huge oval and open-worked component, is composed of various parts and comprises a thick, strong gold mass on its furthest point making the vital imbalance.

Now, Moritz Grossmann claims that the winding productivity of this system is practically equivalent to a standard rotor. How? Since the focal point of gravity of the hammer is twice as a long way from the turn compared to a rotor (where the distance is a large portion of the development, yet here practically the whole breadth of the type 106.0), this outcomes in more influence and force, which means more energy sent to the fountainhead. Notwithstanding that, while antique hammer gadgets were unidirectional,  it now works in the two ways of the swinging movement. Once more, this adds to the efficiency.

Also, while one of the primary issues with old hammer gadgets were stuns, the Moritz Grossmann Hamatic highlights two safeguard parts, coordinated into the oval part – the two end-springs, which ingest a portion of the vibrations and hinder the movement of the hammer, working related to a long focal cutting edge. That was for the initial segment of the winding component, yet what might be said about the transmission of this movement to the mainspring?

In request to change over the energy into a rotational movement, the motions of the hammer body are gotten by two snap switches. The two-path bearing of pivot of the snap wheels guarantees an even rotating movement, which is moved to the free-haggle through decrease wheel to the barrel’s wrench wheel to wind the heart. As a single tick wheel draws in to wind the barrel, the other is separated and the other way around. Their elective activity makes winding bidirectional. A turn of only five degrees can be utilized to wind the mainspring.

Finally, the automatic winding system is complemented by a manual winder planned as a burden winder that is mounted on a different scaffold. The burden guarantees that the manual winder is constantly uncoupled from the wrench wheel when the Hamatic system is dynamic in light of movement. In manual-winding mode, the decrease gear is segregated from the wrench wheel by a tick pawl idler.

So, all things considered, the Moritz Grossmann Hamatic not just takes an old idea and incorporates it in a cutting edge watch, however it really rethinks and improves this hammer winding gadget, which brings about what unquestionably is simply the best and “Haute-Horlogerie-inspired” self-winding system right now accessible – despite the fact that I actually love a fringe rotor. Just wow…

The rest of the development isn’t to be disregarded. This enormous type includes more rarities, like its (excellent) in-house stun safe Grossmann offset with 4 latency and 2 balancing screws, combined with an offset spring with a No. 80 Breguet terminal bend. The entire escapement beats at 21,600 vibrations/hour. The force save is comfortable, at 72 hours.

The beautification of the development is essentially magnificent, with the typical 3/4 plate being supplanted by a genuinely open principle scaffold, and all the parts are finished with roundabout graining, Glashütte ribbings, cleaned slants, screwed gold chatons, hand-made etching (both for the engravings and the chicken extension) and anglages for what it’s worth. Furthermore, that oval swinging hammer…!

An in any case traditionalist watch

Conservative… yet positively! While the early models introduced in 2018 showed patterns on the dial, this last form of the Moritz Grossmann Hamatic is more traditional in its execution and depends on a plain dial. Truth be told, while worn, nothing would tell you what ticks inside, as it would appear that a straightforward time-just watch – and, as far as I might be concerned, this is style to its best definition.

The instance of the Hamatic is traditionally molded, with lengthened, generally solid hauls and a 41mm width. Two comments. To begin with, these carries are all around planned and bended, considering the watch to be adjusted. Second, the thickness of the watch is “only” 11.35mm, which thinking about the development inside remaining parts sensible. The execution is faultless and the case is accessible in either 18k rose gold (as shot) or 18k white gold. The watch is worn on a tactful crocodile tie with prong buckle.

The dial, as perfect and straightforward as it might appear, additionally requires a nearer review. It is made of strong silver with an opaline completion. The outcome is a somewhat grained surface with cautious metallic reflections. The little seconds sub-dial is genuinely recessed into the dial adding some profundity to this generally basic showcase. The stretched, dainty Roman numerals and the smooth railroad track add to the style of the watch and reverberation the pocket watch motivation found on the movement.

Last yet not least, the hands. Once more, careful, extended, flimsy, however amazingly itemized. On the as opposed to other Grossmann watches with spear hands, the hour hand stands apart gratitude to its pear-formed tip, while the moment hand has a needle-like, thin (perhaps excessively slim) plan. The cleaned standard of the hands is likewise eminently executed. The hand-cleaned steel hands are tempered to an earthy colored violet tint – an uncommon tone. Also, taking all things together objectivity, this degree of execution is infrequently found in present day watchmaking.


Back in 2018, the models of the Moritz Grossmann Hamatic previously established a significant connection with us yet today’s last models are essentially amazing. Above all else, the brand settled on the correct decision in having a plain dial. Second, the development is a dining experience for the eye and in fact talking it honors antique pocket watches yet additionally improves these early automatic systems on each and every level.

Personally, I love this combination of outrageous attentiveness for the habillage (case, dial, hands) and exhibition of abilities on the development side. Notwithstanding that, the execution is great and sensitive. This mechanical wonder comes at a high, yet as I would like to think, supported price.

Price and availability

The Moritz Grossmann Hamatic has been accessible from approved retailers since October 2019, in two adaptations – 18k rose gold (ref. MG-002302) and 18k white gold (ref. MG-002303). The two models are similarly valued, at EUR 37,600 before charges. More subtleties at .