We searched for“'s Gravesande Ring Ball Apparatus Scientific Instrument”(identified as Willem 's Gravesande (design), confidence: High)
Typical realised range (Gemini estimate): £800-£15,000+
Comparables
31
Median
£3,603
Suggested estimate
£1,300 – £5,950
25–75% range
£1,309 – £9,461
Overall range
£10 – £105,000
Distribution
Sell-through 100% of lots sold
26% at premier salerooms
Median from 28 sold (all-time — too few recent sales)·hammer prices, excl. buyer's premium — fair-market auction value (retail/insurance replacement runs higher)
103 comparables for “SCIENCE GRAVESANDE” · page 1 of 5
