1858 Split Second Chronograph Limited Edition - 100 pieces

1858 Split Second Chronograph Limited Edition - 100 pieces

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Ident No. U0119910

The Montblanc 1858 product line is inspired by the legendary professional Minerva watches from the 1920s and 1930s which were conceived for military use and exploration. Reinterpreting these legendary timepieces, the Montblanc 1858 product line expresses the spirit of mountain exploration, embodying the modern trend of returning to nature. Housed in a 44 mm fully satin-finish bronze case, the Montblanc 1858 Split Second Chronograph Limited Edition 100 comes with a black lacquered dial paired with colored elements that accentuate the vintage style while also providing excellent readability of the complications by both day and night. Like on the original timepiece, it features a telemeter scale that runs around the dial, which was a typical feature on the legendary Minerva chronographs. It also features a tachymeter (base 1000) at the center of the dial in a colimaçon snail shape, which allows the user to measure a length of time up to three minutes instead of one minute as with a traditional chronograph scale around the dial. It is combined with a new complex “rattrapante” (split second) complication developed by the Montblanc engineers, which allows the user to measure intermediate times without interrupting the ongoing measurement of a longer elapsing time. The Montblanc 1858 Split Second Chronograph Limited Edition 100 is equipped with the brand-new Manufacture monopusher chronograph caliber MB M16.31 that features two column wheels, horizontal coupling and a power reserve of 50 hours. The movement takes its inspiration from the original Minerva caliber 17.29 developed in the 1930s, which was used for both pocket watches and wristwatches.


Movement Type
Manually wound monopusher split-seconds chronograph
Montblanc Manufacture Caliber MB M16.31
Screw balance, Ø 14.5 mm; 59 mg.cm²
Power Reserve
Approx. 50 hrs
No. of components
286 components
18,000 vibrations per hour (2.5 Hz)
Balance Spring
With Phillips curve
Rhodium-plated German silver, circular-grained on both sides, hand-chamfered edges
Rhodium-plated German silver, “Côtes de Genève”, recesses circular-grained on both sides, hand-chamfered edges
Going Train
Wheels: gold-plated, circular-grained, chamfered, diamond hubs on both sides Pinions: polished faces and toothing, burnished pivots


Black lacquer dial with rose gold-coated Arabic numerals; Tachymeter and Telemeter scales
Fixed, bronze
Sapphire Crystal
Domed glass box with anti-reflective coating
Non-screw crown, 1 O-ring, bronze
Luminescent 18 K rose gold-coated hour and minute hands; 18 K rose gold-coated chronograph seconds hand, white split-seconds hand; rose gold-coated counter hands
14.55 mm
44 mm
Water Resistant
3 bar (30 m)

Bracelet / Straps

Alligator-skin strap
Clasp / Buckle
Bronze-coated stainless steel pin buckle



Switzerland is long the home of finest watchmaking traditions. In Montblanc’s Le Locle and Villeret Manufactures in the Swiss Alps, superbly intricate movements are crafted in house by master watchmakers to form the heart of every chronograph. Innovative complications and exquisite adornments are meticulously shaped with skill and dedication to perfect each watch. From hairspring and balance bearing to pallet fork, in over 300 hours of dedicated focus all the elements are brought into singular harmony, and with the first turn of its movement, a watch comes to life and a journey begins.

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From Montblanc with compliments