The 1858 Chronograph Tachymeter Limited Edition 100 showcases a vintage style—from the design of the case, to the movement, strap and details on the dial. The timepiece comes with a champagne dial that has a sunray finishing to match the bronze colour of the case. This combination of colours and finishing gives a monochrome and mono-material aspect to the timepiece, accentuating the volume of the timepiece and drawing attention to the details, such as the historic cathedral-shaped hands and beige Super-LumiNova® markings that accentuate the vintage style while also providing excellent readability at night.
This limited edition is housed in a 44mm full satinated bronze case with a bronze coloured titanium case back (to avoid allergies) and polished bezel for increased depth. Other noteworthy features include a cognac alligator leather strap that, like all the straps in the 1858 Collection, have been crafted at the Montblanc Pelletteria in Florence, and feature a satinated bronze plated buckle that complement the overall design. At the heart of the timepiece lies a traditional manual monopusher chronograph movement, the calibre MB M16.29, with a column wheel mechanism, horizontal coupling, chronograph bridge in a "V" shape, a large screwed balance wheel vibrating at a frequency of 18,000 semi oscillations per hour and a power reserve of 50 hours.
This in-house chronograph has been entirely handcrafted at the Montblanc Manufacture in Villeret and is characterized by an exceptional finishing. Designed in a large "pocket watch" style, thecalibre MB M16.29 has been inspired by the original calibre 17.29 designed for pocket watches and wristwatches in the 1930s. This new version uses almost the same shape of components as the calibre 17.29 , but features different finishings, such as inside angles, Côtes de Genève stripes and circular graining. For the first time, the calibre MB M16.29 bears red gold-coloured components that offer a totally new look and that perfectly match the bronze material and vintage appeal of the timepiece, while also reinforcing its monochrome aspect. As with all the Minerva calibres, one of the movement’s components is shaped into the form of the Minerva arrow to pay tribute to the Manufacture's heritage.
The chronograph indications are displayed via a central chronograph seconds hand and a chronograph minute counter at three o'clock. Other indications on the dial include a tachymeter scale that runs around the dial and a small seconds’ subdial at nine o'clock. The MB M16.29 is a chronograph that adheres to the true spirit of fine watchmaking.