Physical Demonstration Instrument “De la Rive’s Electric Egg”

Apr 17, 2025

Physical Demonstration Instrument “De la Rive’s Electric Egg”, c. 1880 Starting bid: € 1.200 | Estimate: € 2.000 – 3.000 Made by E. Ducretet, Paris, after de la Rive. Glass sphere with valve, mounted on an electromagnet, polarisation switchable, for...

Early Tx/Rx Dial Telegraph by L. Breguet

Apr 17, 2025

Early Tx/Rx Dial Telegraph by L. Breguet, c. 1850 Starting bid: € 1.000 | Estimate: € 2.000 – 3.000 Original integrated receiver and transmitter device as patented in 1849. Entirely original condition. Serial no. 26678. – Literature: Th. Karrass,...

French Two-Day Marine Chronometer, mid. 19th Century

Apr 16, 2025

French Two-Day Marine Chronometer, mid. 19th Century Starting bid: € 2.800 | Estimate: € 5.000 – 7.000 Signed on the 3-inch silvered dial: “Charles Wolff – Eleve du Gouvernement – No. 41”, outer minute ring with Arabic numerals, small seconds on the...

Extremely Rare No. 10 “Tunnan” Table Telephone Set

Apr 16, 2025

Extremely Rare No. 10 “Tunnan” (Barrel) Table Telephone Set, c. 1898 Starting bid: € 750 | Estimate: € 1.500 – 2.000 A.B. Telefonfabriken, Stockholm, Sweden. For the state-owned nationwide “Rikstelefon” network, which was taken over by...

Coffee Grinder Desk Telephone by L.M. Ericsson

Apr 16, 2025

Coffee Grinder Desk Telephone by L.M. Ericsson, 1895 Starting bid: € 4.000 | Estimate: € 6.000 – 7.000 Extremely rare Swedish telephone, export model, with crank inductor, circular pressed lithographed tin case, “Ericsson” handset and wood base. –...