112nd Auction
2025/5/10
Lot 37
Sigmund RieflerTyp D
A "mariage" of an astronomical precision seconds pendulum tank clock - Type D - with Riefler spring impulse escapement, electrical contact device and electrical winding mechanism. The individual parts of the clock consist mainly of original parts from various precision pendulum tank clocks, collected over many years and assembled in this clock. Extensive documentation, restoration reports, barometer, thermometer, original silver-plated dial No. 222 and the solid copper tank are also included in the lot
Sold
estimated
15.000—20.000 €
Price realized
17.000 €
specific features
Case
Later air pressure constant quartz glass tank with glass dome, cast-iron wall bracket.
Dial
Glass (later), type D, numbererd Nr. 222.
Movement
Rectangular-shaped brass movement, seconds contact device, spring impulse escapement no. 120, DRP Nr. 50739, invar steel compensation pendulum "type J¹sch", no. 1747, DRP no. 100870.
Case no.222
Diam.1590 mm
Circa1908
Ctry.Germany
The consignor has spent many years collecting original parts and meticulously documenting their provenance. Dial No. 222, for example, came from a glass cylinder clock in Munich. Movement No. 100 was also sold to Munich in 1905/1906. The invar steel pendulum 'Type J¹sch', No. 1747, belongs to clock No. 345, Type D, originally delivered to Hanover in 1917. The glass tank was made in 1984 at the request of the customer.
Even apart from its condition and history, this Riefler clock is an exceptional rarity for collectors: There were altogether only 49 type D clocks with glass cylinders and some of them are known to be damaged or even destroyed.