Olivetti Summa Prima 20 vintage adding machine with rolls,…
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Olivetti Summa Prima 20 vintage adding machine with rolls, designed by Marcello Nizzoli, made in Italy, circa 1960, 34 cm deep

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  • Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.

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