Marcello Nizzoli - Olivetti, Multisumma 20 - Calculator - 1960-1970
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Selected by Francisco Álvarez
Acquired extensive antiques knowledge through renovation works and running own antiques shop.
Estimate € 110 - € 160
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Olivetti Multisumma 20 electro‑mechanical calculator, designed by Marcello Nizzoli, manufactured in 1964, in good used condition with small signs of age and stains; dimensions 21 × 31 × 15 cm, weight 6.5 kg, not in working order.
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Description from the seller
Olivetti electric writing multiplier – Multisumma 20 – Year 1964
La Olivetti Multisumma 20, available from 1964, is a compact electromechanical calculator with a dedicated multiplication key, instead of relying on successive additions as in the earlier models.
It is unveiled with Olivetti's new calculator design: squared lines that recall the crystal-cut facets and a professional appearance.
This machine, which also automatically performs multiplications, is the most complete model in the 20 series.
In 1968 it was introduced under the brand 'Multisumma 20 R'.
The machine is complete with the original cable, a roll of paper, and a plastic cover; the original two-tone tape is also present. The motor runs normally, the tape advances but the keys are blocked; I think it needs cleaning and lubrication of the internal mechanisms.
Features
It was the latest calculator to emerge from the collaboration between the famous architect Marcello Nizzoli, the design curator, and engineer Natale Capellaro, the designer of the mechanical part.
Manufacturer: Olivetti
Place of origin: Ivrea, Italy
Year of production: 1964
Technology: electromechanical calculator
Actuation: Electric
Keyboard: Reduced, multiple zeros
Printing device: character wheel carrier
Operations: addition, subtraction, multiplication
Negative balance: Yes
Colors: Gray with a black lid
Production: since 1964
Size: 21 x 31 x 15 cm (LxWxH)
Weight: 6.5 kg.
Mechanical Design: Natale Capellaro
Design: Marcello Nizzoli
Please review the attached photos for a better assessment of the lot.
The photos are an integral part of the description.
The lot will be carefully packaged and shipped with a trackable package.
Olivetti electric writing multiplier – Multisumma 20 – Year 1964
La Olivetti Multisumma 20, available from 1964, is a compact electromechanical calculator with a dedicated multiplication key, instead of relying on successive additions as in the earlier models.
It is unveiled with Olivetti's new calculator design: squared lines that recall the crystal-cut facets and a professional appearance.
This machine, which also automatically performs multiplications, is the most complete model in the 20 series.
In 1968 it was introduced under the brand 'Multisumma 20 R'.
The machine is complete with the original cable, a roll of paper, and a plastic cover; the original two-tone tape is also present. The motor runs normally, the tape advances but the keys are blocked; I think it needs cleaning and lubrication of the internal mechanisms.
Features
It was the latest calculator to emerge from the collaboration between the famous architect Marcello Nizzoli, the design curator, and engineer Natale Capellaro, the designer of the mechanical part.
Manufacturer: Olivetti
Place of origin: Ivrea, Italy
Year of production: 1964
Technology: electromechanical calculator
Actuation: Electric
Keyboard: Reduced, multiple zeros
Printing device: character wheel carrier
Operations: addition, subtraction, multiplication
Negative balance: Yes
Colors: Gray with a black lid
Production: since 1964
Size: 21 x 31 x 15 cm (LxWxH)
Weight: 6.5 kg.
Mechanical Design: Natale Capellaro
Design: Marcello Nizzoli
Please review the attached photos for a better assessment of the lot.
The photos are an integral part of the description.
The lot will be carefully packaged and shipped with a trackable package.
Details
Era
1900-2000
No. of items
1
Material
Plastic and metal
Manufacturer/ Brand
Multisumma 20, Olivetti
Designer/Artist/Maker
Marcello Nizzoli
Style
Industrial
Condition
Good condition - used with small signs of aging & blemishes
Height
21 cm
Width
15 cm
Depth
31 cm
Weight
6.5 kg
Estimated Period
1960-1970
In working order
No
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