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Give your office a dose of style! The fun turquoise color is sure to brighten up any space. Though the plate on the back says it is the Summa Quanta 20R model, it shares the rounded buttons and brown base of the Summa Quanta 20. Perhaps a rare hybrid of the two models? If so, bonus score for you!! This adding machine was originally sold by the Bel-Air Office Supply company in Canton, MA (sticker still on the front).

Very minor wear in a few spots (see pictures). The power cord is NOT included so the machine has not been tested, however there are no missing pieces and everything appears to be in working order. Find a compatible cord and you'll be adding up numbers just in time for the tax deadline!

Model: Summa Quanta 20R

Dimensions: 14"L x 7"W x 5"H

*All vintage items are sold in as-is vintage condition and are non-returnable.

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Olivetti Summa Quanta 20R Adding Machine


  • Materials: metal, plastic
  • Only ships within United States.
  • Feedback: 53 reviews
  • Favorited by: 68 people