Founded just over a quarter of a century ago in New York City, Jacob & Co. started as they intended to continue. Namely, designing luxury timepieces and extraordinarily valuable jewellery pieces. After years of designing for private clients and building a sterling reputation with leaders in the worlds of entertainment, sports and high finance, the company launched its flagship store in New York City in 2004. Today, the brand has locations globally and is recognised as one of the premier luxury brands in fine watches and high jewellery. high jewellery and watches such as the SF24 help to bolster and safeguard this reputation.
This beast of a watch features the appealing retro element of a ‘Split Flap’ display. Enough to set off a bout of nostalgia every time you check the time, the spilt flap makes smart use of the hinged flap letters and numbers displays that used to grace every arrival and departure lounge of rail stations and airports around the world. Also known as Solari boards, after Solari di Undine, the Italian company that manufactured them, a few still remain, resisting the digital revolution for now, but the SF 24 celebrates the mesmerising old display method.
The SF, which obviously stands for Split Flap, combines a conventional dial with a split flap display in a roller housing at the top of the case, which shows the time in a second time zone. Two split flap systems show, on the left, the name of the reference city, and on the right, the hour for the city shown. The "24" refers to the 24 cities from which the owner can choose, corresponding to the 24 major time-zones with one hour offsets from Greenwich Mean Time.
The hypnotic mechanical action of the split flap display is a playful bit of horological fun and the first time the system has been used in a wristwatch. It’s perfect for the stylish globetrotter or vintage aficionado alike. Augmenting the dual split-flap display is the rich complexity of the transparent dial, which reveals parts of the movement and puts even more in the spotlight the romance of machinery expressed by the SF 24.
A hefty crown at 4 is balanced by the pusher for adjusting the split time display, which is set into the side of the cylinder that houses it. To show the whole ensemble off is a complex, twopart sapphire crystal that allows each of the two displays to be revealed with crisp clarity. Measuring in at a strapping 45 mm, the watch is powered by a mechanical self-winding calibre 2220 developed by Studio7h38. It has a 40-hour power reserve, and the SF 24 is offered in white gold, rose gold, or high-tech Grade 5 titanium. Endorsed by football maestro Christiano Ronaldo, the price is available on request.