We searched for“Olivetti Divisumma 24 vintage adding machine”(identified as Olivetti Divisumma 24, confidence: High)
Typical realised range (Gemini estimate): £80-£250
Comparables
6
Median
£11
25–75% range
£10 – £85
Overall range
£8 – £150
Distribution
Median from 6 sold (all-time — too few recent sales)·hammer prices, excl. buyer's premium — fair-market auction value (retail/insurance replacement runs higher)·few sales — treat as indicative
77 comparables for “Olivetti adding machine” · page 36 of 4