Minerva’s 39mm Unveiled Secret Puts Its Chronograph on Full Display

Minerva’s latest Unveiled Secret is less about hiding virtuosity behind a sapphire back and more about putting the entire mechanical argument on the front of the watch.

The 39mm limited editions arrive at an important moment for the Villeret manufacture, now presented under its own name again, and they make the strongest case yet for this inverted chronograph concept.

Smaller, more wearable and visually sharper than the earlier 43mm executions, the new Unveiled Secret turns a hand-wound monopusher chronograph into the dial itself.

At a glance

A smaller case for Minerva’s inside-out chronograph

The most immediate improvement is the shift to a 39mm case, a size that suits the intensity of the openworked display far better than the previous 43mm format.

At 14.18mm thick, this is still a substantial hand-wound watch, but the reduced diameter gives the architecture a more controlled presence on the wrist.

Minerva offers the watch in two executions.

One combines a stainless steel case with a fluted rose gold bezel and crown, while the other is crafted in 18k rose gold with 84 brilliant-cut diamonds set into the fixed fluted bezel.

Both versions keep the fluting across the bezel and crown, with the crown housing the integrated monopusher for the chronograph.

The crown now carries Minerva’s arrow emblem in relief, a small but meaningful detail as the brand moves away from the previous double-branding arrangement.

The dial is really the movement

The Unveiled Secret’s appeal sits in the decision to reverse the calibre so the chronograph works in plain sight.

Instead of relegating the levers, column wheel and regulating organ to the back of the watch, Minerva lets them form the visual core of the dial.

The wine-red detailing is more than decorative.

A slender peripheral flange carries rose gold-plated indices, while three overlapping rings organise the time display, small seconds and 30-minute chronograph counter without covering too much of the mechanism.

The central ring frames the hour, minute and chronograph seconds hands.

At 9 o’clock sits the running seconds display, while the 30-minute totaliser at 3 o’clock uses a white Minerva arrow-shaped hand.

Vintage-style syringe hour and minute hands are treated with white Super-LumiNova, as are the indices, giving the watch a more practical read than an exposed dial of this complexity might suggest.

Calibre M13.26 and the Minerva signatures

The calibre M13.26 is a new, compact manufacture movement developed for this 39mm format rather than a simple resizing exercise.

It’s a manual-winding monopusher chronograph with 259 components, 25 jewels and a 60-hour power reserve.

The movement beats at 18,000 vibrations per hour, a deliberately traditional rhythm that also gives the large 11.4mm screwed balance a calm, visible cadence on the dial side.

For enthusiasts, the charm is in the choreography.

Press the crown pusher and the steel chronograph levers engage, the column wheel turns and the mechanism becomes animated rather than merely decorative.

Minerva’s familiar devil’s tail chronograph lever, shaped like the brand’s arrow, appears around 1 o’clock.

The V-shaped Minerva bridge at 4 o’clock is another clear marker of the manufacture’s chronograph lineage.

The plates and bridges are made from rhodium-plated German silver and finished by hand with Geneva stripes and circular graining.

Since the show is happening on the front, the sealed caseback carries a laser engraving of the historic Minerva manufacture in Villeret, with the Minerva name in relief at 12 o’clock.

Case options, straps and ownership details

The two-tone steel and rose gold model is limited to 58 pieces, a number that nods to Minerva’s founding year of 1858.

The 18k rose gold diamond-set model is more exclusive at 18 pieces.

Both watches are paired with a wine-coloured alligator leather strap and a triple-folding clasp with fine adjustment.

There’s no quick-change strap system, which feels a little conservative given the modernity of the case sizing and the visual confidence of the watch.

The lug execution may also divide opinion, as the lug holes leave the tips looking particularly sharp from some angles.

Still, the main story is the newly balanced relationship between scale and spectacle.

This is an elaborate chronograph that no longer asks the wrist to accommodate an oversized case just to enjoy the movement.

Details & Specifications

The 39mm Unveiled Secret is still a niche proposition, but it’s a far more convincing one now.

For collectors drawn to traditional chronograph construction, hand finishing and visible mechanical theatre, this is Minerva using its independence to put its strongest asset exactly where it can’t be missed.