We searched for“Ellis Science mathematical drawing instrument set”(identified as Ellis (The Science of), confidence: High)
Typical realised range (Gemini estimate): £20-£60
Comparables
19
Median
£2,916
Suggested estimate
£200 – £6,300
25–75% range
£202 – £11,332
Overall range
£17 – £105,000
Distribution
Median from 18 sold (all-time — too few recent sales)·hammer prices, excl. buyer's premium — fair-market auction value (retail/insurance replacement runs higher)
