Bonhams

[Bonhams]: The Nicholas Radeloff Rolling Ball Clock
O/P. A 10-page catalogue, with 6 photographs, for a single item - the Nicholas Raedaloff of Schleswig rolling ball clock dated 1660. The clock has a cross-beat escapement and is powered by a rolling ball which provides a constant torque and improves timekeeping. The clock was discovered in England and owned for many years by Hans von Bertele of Austria. Only three clocks of this type are known. Very good copy, card covers. [Sale @ Knightsbridge, London 04/11/1998 ] (Ref: A176)  in stock.

[Bonhams]: Fine Clocks and Barometers
O/P. 140 lots all illustrated in colour. The sale included a rare 17th century provincial longcase clock and a good selection of English bracket clocks. A good copy. Card covers. [Sale @ New Bond Street, London 03/12/2002] (Ref: A84)  in stock.

[Bonhams]: Morse to Marconi and Scientific Instruments
O/P. 248 lots, most illustrated in colour. An interesting collection of artifacts and ephemera relating to the invention of telegraphy and the telephone. The star of the instrument section was a pair of globes by Vincenzo Coronelli. A good copy, card covers. [Sale @ Knightsbridge, London 03/06/2004] (Ref: A378)  in stock.

[Bonhams]: Magnificent Mechanical Musical Instruments and Automata
O/P. 41 lots lots, all illustrated in colour. Fine items - orchestrions, musical snuff boxes, cylinder and disc music boxes, including some from the Mark Yaffe collection. A good copy, card covers. [Sale @ New York 07/10/2010] (Ref: A382)  in stock.

[Bonhams]: Fine Mechanical Music and Scientific Instruments
O/P. 121 lots, most illustrated in colour. The sale included musical automatons, a free-standing silver bird automaton, lots of music boxes, Maelzel's prototype metronome, an Elliott Brothers Lord's calculator and a Powell and Lealand No. 1 microscope. A good copy, card covers. [Sale @ Knightsbridge, London 03/11/2010] (Ref: A370)  in stock.

[Bonhams]: Fine Mechanical Music & Scientific Instruments
O/P. 209 lots, most illustrated in colour. A good selection of microscopes, divers helmets, and a rare armillary sphere by George Adams. A good copy, card covers. [Sale @ Knightsbridge, London 09/11/2011] (Ref: A372)  in stock.

[Bonhams]: Fine Clocks
O/P. 121 lots, most illustrated in colour. The sale included a previously unrecorded longcase clock by Johannes Fromanteel of London, several fine modern clocks by Roland Jarvis and several large English carriage clocks. A very good copy, card covers. [Sale @ New Bond Street, London 29/06/2017] (Ref: A441)  in stock.