To mark the 55th anniversary of Sinn in 2016, the watchmaker presents the 910 Anniversary from its Frankfurt Financial District collection. This watch is limited to just 300 pieces and boasting a special technical feature. In addition to a stopwatch, it also features a split-seconds mechanism for recording intermediate times.
The historical value of an additional feature adds to its appeal. The 910 Anniversary features a ratchet wheel chronograph that stops the time. Such timepieces are regarded as technically demanding and as an expression of traditional watchmaking, since the ratchet wheel control mechanism has been a key component in traditional chronographs since the mid 1900s.
The split-seconds hand moves in sync with the second stopwatch hand until the push-piece is pressed at 8 o’clock. The split-seconds hand then remains in the “off” position and allows to read the intermediate time. On pressing the push-piece again, the split-seconds hand catches up with the second stopwatch hand and continues to move in sync with it.
The Sinn 910 Anniversary watch is powered by a mechanical movement, the Valjoux 7750 Rattrapante, equipped with a self-winding mechanism. It works with 28,800 semi-oscillations per hour. This calibre has been modified to mimic the behaviors of early split-second timers, where the split-second hand remains in sync with the main chronograph seconds as mentioned earlier.
The workings of the perfectly synchronised mechanism can be admired through the transparent sapphire crystal back.
The stainless steel case is 41,5 mm in diameter and is both polished and satinised. Both, the case and the dial, have a vintage-inspired design aesthetic. You will find red highlights on the cream-colored dial and (obviously) a double scale for measuring units per hour.
The Sinn 910 Anniversary chronograph comes with a leather and a stainless steel bracelet at a price of $5,940.
To commemorate the 55th anniversary, the limited-edition number and the years “1961 – 2016” are engraved on the case back.