141. Louis Roskopf S.A., ca 1906, Patent pocket watch, remontoir movement, with chain.
Fritz-Edouard Roskopf had one son, Louis-Frederic Roskopf.
Louis-Frederic with watchmaker Léon-Henri Reinbold, founded the Louis Roskopf & Cie watch company.
Trade marks were 'Louis Roskopf S.A.', 'Petit Fils Roskopf' and 'Roskopf Nieto'.
Around 1923, the companies merged with Reconvilier Watch Co SA, a company active since 1902 and among others making Roskopf type watches.
The company remained active till the 1970's.The total amount of Louis Roskopf watches can be estimated at 10 million.
Louis Roskopf S.A. Registered: 7 April 1906,
La chaux de Fonds and Reconvillier, Swiss.