Rolleiflex 2.8 F Aurum

Jul 27, 2025

Rolleiflex 2.8 F Aurum, 1983 Starting bid: € 1.200 | Estimate: € 2.000 – 3.000 Rollei-Werke Franke & Heidecke, Braunschweig. Gold-plated anniversary model, covered in brown reptile leather, no. 8300029. Schneider Xenotar 2.8/80 mm, some dust visible inside...

Bavarian Skeleton Telephone by Friedrich Reiner

Jul 27, 2025

Bavarian Skeleton Telephone by Friedrich Reiner, c. 1903 Starting bid: € 1.600 | Estimate: € 2.500 – 3.500 Signed on the earphones “FRM” (Friedrich Reiner, Munich), with swivelling microphone support, carbon microphone, 2 Bell type earphones. – A...

Burkhardt Arithmometer Model A

Jul 27, 2025

Burkhardt Arithmometer Model A, c. 1900 Starting bid: € | Estimate: € 2.000 – 3.000 Arthur Burkhardt, Glashütte, serial number probably 5177, marked on lid “Burkhardt Arithmometer” (calculating machine), with 8, 9 and 16 digits, new patented lever...

Mercedes/Gauss Calculator

Jul 27, 2025

Mercedes/Gauss Calculator, 1907 onwards Starting bid: € 7.500 | Estimate: € 12.000 – 15.000 Low serial no. 1610, Mercedes-Bureau-Maschinen Ges. mbH, Berlin, S.W. 68, German patent 194527 from 23 March 1905, stepped-disc calculating machine for all four basic...

Saxonia Calculator

Jul 27, 2025

Saxonia Calculator, c. 1905 Starting bid: € 1.200 | Estimate: € 2.500 – 3.500 Rare German stepped-drum calculating machine by Rechenmaschinen-Fabrik Saxonia, Glashütte i.S., with 6 input sliders, 7-digit revolution counter and 12-digit results mechanism in oak...