"The Millionaire" Calculating Machine, 1911Rare Swiss calculating machine for all 4 basic arithmetic operations, by Otto Steiger, St. Gallen, Swit...

Curta Type I Calculator, 1964Curt Herzstark, Liechtenstein. With original tin case. Serial no. 55726. - Very desirable, working condition!Zustand:...

2 ComptometersAmerican adding machines by Felt & Tarrent, Chicago. 1) "Comptometer Model H", c. 1920, 10-digit fast adding system and direct drive...

TIM Mod. 1 (Unitas), 1907Early lever-set stepped-drum calculator with double-result sled, 2 x 12, 7 and 8 digits, manufactured by Ludwig Spitz & C...

6 Spoke-Wheel Calculating Machines1) "Tiger", made in Osaka, Japan. Resembles the Brunsviga, 9, 10 and 18 digits, mechanism sticks, c. 1920, seria...

Adix Mod. 2, 1903Attractive 3-digit adding machine with 9 keys and release lever by Pallweber & Bordt, Mannheim, Germany. In original velvet-lined...

Mercedes-Euklid Electrical Calculating Machine, 1914 onwardsModel 8, American dealer's plaque "Ralph C. Coxhead Corporation, New York", proportion...

5 Mechanical Calculators1) "Brunsviga Midget", c. 1920, made by Grimme & Natalis, Braunschweig, Germany. Serial no. 67718, spoked-wheel machine, 9...

3 Mechanical Calculating Machines1) "Hannovera A", 1923, rare German spoke-wheel calculating machine, 9, 8 and 13 digits, low serial no. 2314, mis...

4 Electric Calculating Machines, c. 1940-601) Mercedes-Euklid, model 30, Germany, serial no. 226. - 2) Burroughs Comptometer, England, serial no. ...

4 Electric Calculating Machines1) Mercedes-Euklid, model 22, c. 1936. - 2) Robotron, model 314, GDR, with printer, c. 1975. - 3) Rheinmetall, c. 1...

3 American Adding Machines1) Comptometer Model C, 1904, manufactured by Felt & Tarrent, Chicago. With 8-digit fast adding system and direct drive,...

2 ComptometersAmerican adding machines by Felt & Tarrent, Chicago. 1) "Comptometer Model C", 1911, 8-digit fast adding system and direct drive, se...

6 Mechanical Calculators1) "Comptometer H", 1920, manufactured by Felt & Tarrent, Chicago. With 8-digit fast adding system and direct drive, seria...

6 Mechanical Calculators1) "Comptometer H", 1920, manufactured by Felt & Tarrent, Chicago. With 8-digit fast-adding system and direct drive, seria...

Burroughs Adding Machine Company, Detroit, Michigan, c. 1925Large factory image of the famous American calculating machine manufacturer, glazed, s...

2 Small Counters1) Unmarked, c. 1890, silver case in pocket watch shape, 3 digits, Ø 1 ½ in. - And: 2) Benton Mfg. Co., New York. The "O" Register...

Web Adder and Golden Gem1) Webb Adder, c. 1900, nickeled cast iron. (3/2) - And: 2) Golden Gem, 1908 onwards, 7-digit chain adder, manufactured by...

American Disc Adder, c. 1870-90Without maker's mark, resembling the Webb-type figure-eight adder, cardboard baseplate, size 12 2/5 x 12 2/5 in., b...

"Palmer's Pocket Scale", 1844Aaron Palmer, "Palmer's Pocket Scale, with Rules for Its Use in Solving Arithmetical and Geometrical Problems", Bosto...

3 Calculating Watches and 1 Circular Slide Rule1) "E.A. Sperry's Calculator", c. 1910, made by Keuffel & Esser, 2-sided, Ø 2 1/10 in. - 2) "Fowler...

2 Watch-form Calculators1) "The Mechanical Engineer", c. 1910, Swiss, sold by Scientific Publishing Company, 2-sided, - And: 2) "Calculigraphe", c...

7 Interesting Office Antiques1) American Check Protector "Page", 1912. Pocket size, patented 1912, nickel-plated, Ø 2 ¾ in. - Very rare! - 2) "Gol...

4 Watch-form Calculators1) "Halden's Calculex", c. 1910, made in Manchester, England, by Joseph Halden, 2-sided, Ø 2 2/5 in. - 2) "Fowler's Calcul...

"Curta Type II" (Grey), 1959Small mechanical stepped-drum calculator by Curt Herzstark, Liechtenstein, with original metal case. Serial no. 517915...

"Bunzel-Delton No. 5" Calculator, c. 1908Rare and unusual brass stepped-drum calculating machine by Bunzel-Delton Werk, Vienna, Austria, 9, 9 and ...

6 Mechanical Calculators1) Twin-Brunsviga Mod. D 13 R-1, c. 1960, serial no. 291798, rare duplex machine for special calculations in surveying and...

Calculating Machines and Tools1) "All Scriptor", c. 1930, made by Master Brüssel. Slide-adder, near-mint, with instructions in box. - 2) "Comptome...

"Laytons Improved Arithmometer", 1911Rare English brass stepped-drum arithmometer with interesting patent dates from 1909 and link to Matth. Bäuer...

5 Mechanical Calculators1) "Comptometer Model E", 1920, manufactured by Felt & Tarrent, Chicago. With 8-digit fast-adding system and direct drive,...

Orga-Constant Calculating Machine, c. 1924Rare German slide-controlled spoked-wheel calculator, manufactured by Bing-Werke, Nuremberg. 9, 8 and 13...

3 Mechanical Calculating Machines with Printers1) "American Adding Machine", model 4, c. 1920, lever-set, working. - 2) "Federal Visible", c. 1920...

"Peerless" Calculating Machine, 19044-species German stepped-drum calculator by Math. Bäuerle, St. Georgen, Black Forest. Serial no. 3724, cast-ir...

2 "TIM" Calculating Machines, c. 19102 four-species German stepped-drum calculators by Ludwig Spitz, Berlin, cast-iron cases. 1) Key-type, 8, 9 an...

6 Spoked-Wheel Calculators1) Thales MEZ, c. 1930, serial no. 36658, miniature calculator, 5, 5 and 10 digits, working. (2-3/2) - 2) Walther RMKZ, ...

2 Early Electronic Calculators1) "Sharp Compet CS-10A", 1964, manufacturer: Ha yakawa Electric Co., Ltd., Japan. Serial no. 8604, the first Sharp ...

4 Electric Calculating Machines with Printers, c. 1950-601) Lagomarsino Totalia, model 8341, Italy. - 2) Victor, model 178354, USA. - 3) Olivetti ...

2 Early Electronic Calculators with Nixie-Tube Output1) "Anita C/VIII", 1961 onwards, Bell Punch Company London, England. The world's first electr...

4 Electronic Calculators1) "Friden EC 132", 1965, successor of world's first all-transistor calculator Friden EC 130, manufactured by Friden Inc.,...

Sharp Compet 623B Desktop Calculator, c. 1975Japan. Printing only, no display, with folding keyboard and carrying handle. - Very rare!Zustand: (2-...

7 Electronical Calculating Machines1) "Casio 121-A", 1970, Japan, 15 keys, 4 functions, 12 Nixie tubes. - 2) Singer model 1017, 1971, Hitachi Japa...

Slide Rules and Calculating Aids1) Faber-Castell, Addiator 67/54 Rb, combination of slide rule and additor, c. 1960. - 2) A.W. Faber, model 367, w...

6 Mechanical Calculators1) Everest Z5, 1953, spoked-wheel, made by Serio S.p.A. Machine per Scrivere e da Calcolo, Milano, Italy, ten-key keyboard...

2 Brunsviga Spoked-Wheel Calculating MachinesMade by Grimme & Natalis, Braunschweig. 1) "Brunsviga D13 R-2" twin calculator, c. 1955, for special ...

Collection of Electronic Table and Pocket CalculatorsCanon Pocketronic, with thermo printer - Victor MEC/225 - Heathkit IC-2108 - 3Com Palm Pilot ...

"The Millionaire" Calculating Machine, 1918Rare Swiss electric calculating machine for all 4 basic arithmetic operations, by Otto Steiger, St. Gal...

"Arithmomètre Payen", c. 1895Large model of world's first serially produced calculating machine, by Thomas' successor "L. Payen, Paris". Serial no...

Large Collection of Calculating Devices1) "Animated Transparency Slide Rule", U.S. Naval Training Device Center, for overhead projection, 1958. - ...

"Saxonia 1" Calculator, 1895 onwardsRechenmaschinen Werkstatt Saxonia Glashütte in Sachsen. Exceptionally rare German stepped-drum calculating mac...

Rare Adder with Printer, c. 1925Manufacturer and model unknown, 10-digit keyboard, hand-operated lever, screwed metal case, with an unusual featur...

Adix, Comptator und SuN3 mechanical calculators. 1) "Adix Mod. 4", 1903 onwards, attractive 3-digit adding machine with 9 keys and release lever b...

Mechanical Accountant Duplex Model B, c. 1910Manufacturer: Mechanical Accountant Co., Providence, Rhode Island, USA. Invented by Joseph Abraham Va...

4 Mechanical American Calculating Machines1) "Burroughs Class 5", c. 1920, Burroughs Adding Machine Company, Detroit, no. A342892, working. (3/2) ...

"Curta Type II" (Grey), 1965Small mechanical stepped-drum calculator by Curt Herzstark, Liechtenstein, with original bakelite case. Serial no. 539...

2 Early Electronic Calculators1) "Canon 130S", 1968, manufacturer: Canon Camera Co., Inc., Japan. Serial no. 851047, electro-optical display, 110 ...

Calculating Machines and Tools1) "Resulta P7", c. 1980, Germany, with printer, mechanism sticks. - 2) "Precise Adder", c. 1950, Chicago, with pen,...

"The Millionaire" Calculating Machine, 1895Constructor: Otto Steiger, St. Gallen, Switzerland, after Leon Bollée's invention, manufacturer: Hans W...

"Archimedes" Mod. A Arithmometer, 1906German brass stepped-drum calculating machine for all 4 arithmetical operations by Glashütter Rechenmaschine...

9 Abaci1) Japanese soroban, 15 columns in 4/1 deck, reset lever, metal frame, size 13 1/3 x 3 1/6 in. - In addition: A carved jade medallion with ...

Saxonia Calculator, 1895Exceptionally rare German stepped-drum calculating machine by Rechenmaschinen-Fabrik Saxonia, Glashütte i./S., mahogany ca...