• 銅夾板機芯，特大型工字輪擒縱機構，木製錶盒後部的特大型凹槽齒輪上弦，三臂銅齒輪每分鐘旋轉一次 • 白色琺瑯彩錶盤，黑色阿拉伯數字 • 外環分鐘及1/5秒細分刻度 • 黃銅基座雕刻RIEUSSEC H-ger DU ROI CHRONOGRAPHE B-et D'INVENTION A PARIS RUE N-ve DES PETITS CHAMPS N 13 • 分鐘刻度圈雕刻阿拉伯數字，數字0至9每分鐘啟動，可手動調校，按下左邊按鈕可開始計時，按下右邊按鈕可啟動給墨機構，按下最後一個按鈕，顯示墨水儲存 • 桃花心木錶盒，後部有一滑板，可調節擺輪

* 拍品資料以英文圖錄為準。

1: Seine département prefecture, Horse races, excerpt from the minutes of the meeting on September 23, 1821, 

2: Institut National de la Propriété 🌸Industrielle,

3: Institut National de la Pr🍒opriété Industrielle,

Nicolas Mathieu Rieussec (1781-1866) was an important French watchmaker and inventor.  Clearly a talented child, he was already established as a watchmaker in Rue du Marché-Palu by 1805. He was made watchmaker to The King in 1817.

Rieussec's brother, Nicolas Joseph, was heavily involved in the equestrian 🐷racing world in Paris and it is therefore no coincidence that Nicolas Mathieu seized the opportunity to develop a timing instrument that, in 1821, became the first chronograph.

After a long and successful life, Nicolas Mathieuಞ Rieussec died at his home at 60 Avenue du Bel-Air in Paris, in 1866.