

The present watch no. 82013, produced in 1924, is one of only 12 tourbillons made by A. Lange & Söhne. Of those 12, only six have been offered at auction to the best of our knowledge. It took about three years to create each tourbillon watch. Of the twelve produced, only seven were built with up-down indication, as seen on the present piece. The raised gold hour markers also differentiate this piece from the others in its series. It is interesting to note that tourbillon No. 82014, also silver-cased, is in the Deutsches Uhrenmuseum Glashütte collection.
A. Lange & Söhne started production of tourbillon movements relatively late and likely drew inspiration in the carriage design from Girard Perregaux, see Reinhard Meis, A. Lange & Söhne Watchmakers of Dresden, Vol.II, 2012, p. 184. According to Fridolin Stübner's notes, tourbillons were the first watches he built for Lange. Stübner was an exceptional chronometer maker who had worked for Dürrstein & Co before becoming a director at the Lange firm.