It's now easy to find a movement with something to talk about. But how many watches can be described solely through their movement? One such rare example is the Caliber MB M13.21, a chronograph equipped with the former Minerva Caliber 13-20CH series. This chronograph movement, released nearly 100 years ago, has undergone a rare transformation and continues to fascinate watch enthusiasts today.

Photographs by Takeshi Hoshi (estrellas)
Interview and text by Masayuki Hirota (Chronos-Japan)
[First published in the November 2020 issue of Kronos Japan]


COLLECTION VILLERET 1858 VINTAGE PULSOGRAPH
One-push chronograph rebuilt in 2011

Collection Villeret 1858 Vintage Pulsograph
This is the first in a collection that returns to its roots. Released in 2011. As the name suggests, it features a pulsometer used by doctors. Manual winding (Cal. MB M13.21). 22 jewels. 18,000 vph. Power reserve of approximately 60 hours. 18KRG (diameter 39mm, thickness 12.5mm). Water resistant to 3 bar. Limited to 58 pieces worldwide. Current market price (recommended retail price: 40,580 euros).

 After completing its acquisition of Minerva in 2007, Richemont reorganized the company into the Minerva Haute Horlogerie Institute (Institut Minerva de Recherche en Haute Horlogerie) and released four new watches under the Montblanc name, the "Collection Villeret 1858," featuring Minerva movements. The highlight, of course, was a chronograph equipped with the MB M13.21, also known as the wristwatch chronograph caliber 13-21. To be honest, I was skeptical of Minerva's future, including its design, at the time, but I suppose it's a good thing that a dormant manufacturer has returned to the forefront. Montblanc, with an annual production capacity of 200,000 units, was the perfect choice for Minerva.

 Since then, Montblanc has equipped various models with this movement, further enhancing the brand's core. A major change in direction came in 2011, when the Villeret 1858 collection, which had previously been given an avant-garde design, returned to a more classic design reminiscent of the Minerva of yesteryear. The "Vintage Pulsograph," released that year in particular, retained its elaborate finish but featured a black enamel dial, making it a watch for connoisseurs. Furthermore, the price was no longer exorbitant given its features.

 Jérôme Lambert, who became Montblanc's CEO in 2013, was well aware of the value of Minerva in preserving classic watchmaking. He wanted to promote Minerva not just as an icon, but as an achievable collection. This meant returning to the path Minerva had always aimed for. The Montblanc Heritage Pulsograph Limited Edition 100 released in 19 symbolized this new direction.

(Left) Since its revival in 2007, the Villeret 1858 Collection has adopted a concave bezel with a hollowed-out interior. This is one of the reasons why this watch, with its cylindrical case, does not appear flat. (Right) A major feature of this watch is its use of black enamel, which was extremely rare in 2011. The indexes and other details are painted on top of the black enamel. Black enamel has a low yield rate, but the one used in this watch has minimal distortion on the surface, giving it an onyx-like finish.

Case side. It is a standard cylinder case, but it has been cleverly given a three-dimensional appearance to avoid a sense of thickness. The push buttons, which are located closer to the lugs, a characteristic of the Minerva 13-20CH, have been returned to the standard position since 2007.

(Left) The MB M13.21 seen through the transparent case back. The biggest difference from previous models is that the plate and bridge have been changed from brass to nickel silver. However, because they are rhodium-plated, they will not yellow over time. The extremely high-quality finish is the same as that of existing models. (Right) Gold hour and minute hands and chronograph hands painted red. As you would expect from a high-end watch, you can see that the color extends completely to the sides of the hands. However, speaking of personal preference, I would prefer the chronograph hands to be a little longer.


MONTBLANC HERITAGE
PULSOGRAPH LIMITED EDITION 100
Salmon color inherits Minerva's design code

Montblanc Heritage Pulsograph Limited Edition 100
A chronograph with a 1940s-50s-inspired design. It may look plain, but it's equipped with an incredible movement. Manual winding (Cal. MBM13.21). 22 jewels. 18,000 vph. Power reserve of approximately 55 hours. Stainless steel (diameter 40mm, thickness 12.6mm). Water resistant to 5 bar. Limited to 100 pieces worldwide. Price: 326 million yen.

 In 2019, Montblanc consolidated its overly fragmented product lines into four: Heritage, 1858, Timewalker, and Star Legacy. The two top-tier lines, which represent the classic line, were given Minerva movements. Rather than being separate Minerva models, they were placed within the existing line. The Montblanc Heritage Pulsograph Limited Edition 100 was a new model born from this approach. It features the MB M13.21 movement. The outstanding finish remains the same as before. However, the case is now made of stainless steel, and the price has been lowered to the ¥3 million range. While this is a modern Minerva, it's not a mass-produced model, but it's certainly more accessible. The design has also been simplified, reminiscent of Minerva chronographs from the 1940s and 1950s. Honestly, it's hard to imagine this watch housing an outstanding movement, but it certainly is, just like the Minervas of old.

 To be honest, for those who know the Minerva from the past, the price may be too high. However, you can get a chronograph movement designed about 100 years ago with almost the same shape and better finish, even though it has been manufactured using fairly modern techniques. And unlike antiques, it can withstand everyday use.

 Jerome Lambert, former CEO of Montblanc, described the Minerva movement, which was under the company's umbrella at the time, as a "treasure." This is certainly true. If you're looking for a classic, high-quality movement, a Montblanc chronograph with a Minerva movement is definitely worth serious consideration. While there are many in-house chronographs on the market, few offer such inspiring experiences for connoisseurs, including the feel, finish, history, and how it was revived.

(Left) The crown is more understated. Its reduced protrusion gives it a classic impression. When you wind it, there is a clicking sensation that makes it hard to believe that a waterproof gasket is installed. However, as is typical of modern high-end watches, there is no rattle when you pull the crown. (Right) Like models from the 1940s, it features indexes that mix Arabic numerals and dots. The dial is unique, with the base roughened by pressing. It is not the finest quality, but it is still of good quality. By using Montblanc's old logo, the Heritage Collection has a more classic image. The sky blue used for the pulsometer is also classic.

Case side. The domed crystal allows for the tapered case middle design of the 1940s model to be reproduced. As with the 2011 Pulsograph, the pushers are positioned closer to the crown.

(Left) A movement worth seeing. It is basically the same as the 2011 model, but the shape of the counter retainer spring has been changed. (Right) The hour and minute hands have an anthracite finish, just like the indexes. The chronograph hands are also painted black. The color extends to the sides, making this a truly high-end watch. Also, by giving the dial itself a bombe finish, the clearance between the hands and the dial has been greatly reduced.


Contact info: Montblanc Contact Center ➿0120-39-4810